calculator degree or radian mode

Trigonometry Calculator + Full Trigonometric Functions [RAD]

A. how to use trigonometry calculator.

Important! this Trigonometry Calculator uses [RAD] mode or radian mode. This used for trigonometric calculation. For example cos (1) the same as cos 1 Rad .Some calculators use RAD Mode or Radian (1 RAD = 57,296°) as a standard-setting.

Click [DEG] to change Degree Mode.

B. Trigonometry Button Functions

Ab.1 basic trigonometry button functions.

sin button calculates sine

cos button calculates cosine

tan button calculates tangent

B.2 Inverse Trigonometry Button Functions

sin⁻¹ button calculates arcsin

cos⁻¹ button calculates arccosin

tan⁻¹ button calculates arctan

B.3 Reciprocal Trig Ratio Button Functions

csc button calculates cosecant

sec button calculates secant

cot button calculates cotangent

C. Geometry and Logarithm Button Functions

π button inputs phi constant

e button inputs euler constant

log button performs logarithm base 10

ln button performs natural logarithm

D. Keyboard Functions

You can use the keyboard to input number and arithmetic operator

0 1 2 3 4 5 6 7 8 9 . the key can use to input number

+ - * / key can use to input arithmetic operator

Backspace key can use to clear the last digits

Enter key can use to execute calculation (same as equal)

Thanks for using our online math calculator!

Click the result value to use it at calculator screen

Note: " × " button closes the history window

Trigonometry Calculator | Degree + Radian Trigonometric Functions v3 Advernesia | About | Disclaimer | Privacy and Policy (GDPR) | Contact Us and Donate | Analyzed by Google Analytic | Ads by AdSense

HOW TO CHANGE A CALCULATOR TO DEGREES?

Degree Vs. Radian

Most people are more familiar with degrees than radians. A degree is a unit of measurement that's used to measure angles, and one complete circle is equal to 360 degrees. Radians, on the other hand, are a bit more complicated. A radian is defined as the ratio of the length of an arc to its radius.

One radian is equal to 57.2958 degrees, which means that there are approximately six radians in one complete circle. So, how do you know which unit of measurement to use? In most cases, it doesn't matter which one you use. However, there are some situations where it's more convenient to use radians. For example, when working with trigonometric functions, it's often easier to use radians.

It's better to convert between the two units before you start working on a problem. This way, you can avoid any confusion and make sure that you're using the right unit of measurement.

Degree Mode Vs. Radian Mode On A Calculator

The degree mode on a calculator is simply another way of measuring angles. When you're in radian mode, your calculator will measure angles in terms of radians. However, when you're in degree mode, your calculator will measure angles in terms of degrees. The degree mode is often denoted by the symbol “°”.

How To Change Calculator To Degrees?

First of all, test what mode your calculator is currently in by trying to calculate the value of sin 90. If the answer is 1, then your calculator is currently in degree mode. If the answer is 0.89399, then your calculator is currently in radian mode.

To change from radian mode to degree mode , simply press the "MODE" button on your calculator. This will bring up a menu with different settings that you can change. Use the arrow keys to navigate to the "DEG" setting and press "ENTER". Your calculator should now be in degree mode. To change from degree mode to radian mode, simply repeat the process and select the "RAD" setting instead.

The step by step process to change your calculator from radians to degrees is given as follows:

• Locate the "Mode" button on your calculator. This button is usually located near the top of the calculator.
• Press the "Mode" button until you see the word "DEG" on the display. This indicates that your calculator is now in degree mode.
• Use the calculator as normal.

On some calculator models, such as the Casio FX-5500L and others, you might need to press the "Mode" button twice or more. On calculators like the FX-83GT Plus, you may have to press "Shift" and "Mode" to display the appropriate menu screen. If none of these methods work, consult your model's handbook to discover the button combination that works for your specific model.

Converting Between Radians and Degrees

If you need to convert between radians and degrees, there's a simple formula that you can use. To convert from radians to degrees, multiply the number of radians by 57.2958. To convert from degrees to radians, divide the number of degrees by 57.2958. For example, if you want to convert pi radians to degrees, you would multiply pi by 57.2958, which would give you 180 degrees.

Other examples include:

• Convert 45 degrees to radians: 45 divided by 57.2958 equals 0.7854 radians.
• Convert 0.523598775 radians to degrees: 0.523598775 multiplied by 57.2958 equals 30 degrees.
• Convert pi/12 radians to degrees: pi/12 multiplied by 57.2958 equals 15 degrees.
• Convert 60 degrees to radians: 60 divided by 57.2958 equals.

How To Change Calculator To Degrees On An Online Calculator?

Online calculators come with a wide variety of features and settings. Most online calculators come with direct options to change the mode from radians to degrees. For example, on the online calculators, you can simply click on the "Deg" button to change the mode from radians to degrees.

Other Features In A Scientific Calculator

A scientific calculator comes with a wide variety of features and settings. In addition to having the ability to change the mode from radians to degrees, most scientific calculators also come with other features, such as:

• Calculate the value of sin, cos, tan and other trigonometric functions.
• Calculate the value of logarithms.
• Calculate the value of exponential functions.
• Solve equations.
• Graph functions.
• Convert between different units of measurement.
• Perform statistical calculations.
• Calculate the value of permutations and combinations.
• Calculate the value of factorials.
• And much more!

If you're having trouble changing the mode on your online calculator, consult the calculator's user manual for instructions. Most online calculators have a "Help" or "FAQ" section that can be accessed from the calculator's main menu.

In conclusion, changing the mode on your calculator from radians to degrees is a relatively simple process. Most calculators have a "Mode" button that can be used to change the mode.

Remember, when working with angles, it's often more convenient to use radians. However, in some cases, you may need to use degrees. Knowing how to change the mode on your calculator will allow you to work with whichever unit of measurement is more appropriate for the task at hand.

Latest Calculators…

• Military Time Calculator
• QR Code Calculator
• Salary Calculator
• Carbon Calculator
• Date Calculator
• Exercise Calculator
• Percent Calculator
• Social Media Calculator
• Statistical Calculator
• Working Hours Calculator

Calculator Categories…

• New Calculators
• Business Calculators
• Credit Card Calculators
• Finance Calculators
• Health/Fitness Calculators
• Internet Calculators
• Investment Calculators
• Planning Calculators
• Time/Date Calculators
• Other Calculators

Recent Posts…

• Financial Calculators
• Scientific Calculators
• Graphing Calculators
• Calculator Keys And Functions
• Online Versus Real-World Calculators
• Top 10 Popular Online Calculators
• Essential Guide to Online Calculators
• Maximize Math Success With A TI-84 Calculator
• Top 10 Calculator Myths
• Calculators and Mental Math Skills

How useful was this information?

Radians vs. Degrees

In a typical physics class, we change from degrees to radians and back several times.  When should you use radians vs. degrees?  I’ll help you decide.

You should use radians when you are looking at objects moving in circular paths or parts of circular path.  In particular, rotational motion equations are almost always expressed using radians.  The initial parameters of a problem might be in degrees, but you should convert these angles to radians before using them.

You should use degrees when you are measuring angles using a protractor, or describing a physical picture.  Most people have developed intuitive feel for the common angles.  This would be common in vector related problems, including speeds, projectiles, forces, and similar situations.

Warning for Calculators

Your calculator has three angle-related options.

• DEG mode, which uses degrees in trig functions,
• RAD mode, which uses radians in trig functions, and
• GRAD mode, which breaks a circle into 400 pieces.

Make sure that your calculator is in the proper mode depending upon the topic you are studying.  Unless you are a surveyor, chances are that you will never use GRAD mode, except by mistake.

Would you like to learn more?  Read on for information about degrees and radians.

The circle was divided into 360 degrees in ancient times.  Several plausible reasons exist.

• The year has 365 days.
• The number 360 can be broken in to many factors, 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 45, 60, 90, 120, 180, 360.  This makes it easy to divide a circle into equal parts.  (This is similar to the reason why we divide a foot into 12 inches.)
• The number 360 is a natural part of the base 60 number system.

One of the results is that the size of a degree is relatively small. We can use a protractor and measure or draw the angles of a triangle relatively easily.  You can probably draw a triangle with angles of 30°, 60°, and 90° fairly easily.  You could also estimate the angle of a 45° incline fairly accurately.

Throughout the early weeks of a physics class, we use angles measured in degrees frequently.  Degrees show up with vectors and are used in directions, forces, accelerations, slopes, and other measurements.

What is the other choice in radians vs. degrees?

The radian is related to the diameter (and thus radius) of a circle.  In ancient times, people realized that the diameter D , and the circumference C of all circles had a common ratio, i.e.

Since this ratio was fixed, they gave it a special symbol,  π .   It is known as an irrational number, because it can’t be written as a fraction with two integers.  (The ratio 22/7 comes about as close as you can get reasonably.)

You probably learned this relation using the diameter or the radius (2  r  = D ) as…

The radian is really unitless, because it is the ratio of two lengths.  However, when we are working with circles or parts of circles, we want to make sure we know we are talking about this ratio. Hence, we always add the word radians to show this ratio.

It is better to say that there are “2 π radians” in a circle, rather than just “2 π ” in a circle.

The Problem with Radians

The problem with radians is that an angle of one radian is fairly large.  In fact, you could estimate it at about 60 degrees, though its true value is about 57.32 degrees.  This would be like trying to measure the length of your fingers in yards.  You could do it, but each of your fingers would measure as some small fraction of a yard.

This is convenient in some cases though.  You probably remember using fractions like  π /2 = 90°,  π /3 = 60°,  π/ 4 = 45°, and  π /6 = 30° back in trigonometry class.

When we talk about rotational motion, radians become the preferred unit of measure for angles.  This ultimately stems from the description of the arc length, s,  given by

Using this relationship, we can multiply the radius by the angle in radians to determine the arc length.  No conversions are necessary.

In particular, for uniform circular motion, the angular frequency, ω,  is related to the period, T , through the relation

which tells us that if we know the time (period = T ) it takes to move once around the circle (angle = 2 π ), we can determine the angular speed.  (For uniform circular motion, the speed is constant, so the angular speed and the angular frequency are the same.)

For parts of the circle, the distance traveled around the circle can be found using

If we didn’t use radians, we would have to convert out of degrees for this to work.

The Small Angle Approximation

We need to be measuring angles in radians to make use of the small angle approximation .  If you apply the approximation to compare degrees, it won’t work at all.

Warning for Excel

Excel is programmed to assume that things are measured in radians when using any of the trig or inverse trig functions.  For example, if you take the sine of a number, Excel assumes that the number is an angle in radians.  Likewise, if you take the inverse sine (or arcsine) of a fraction, Excel will give you the result in radians.

In a later lesson, I’ll give you hints on how to spot these types of mistakes.  For now, I hope you are able to choose between radians vs. degrees.

If you have any questions or comments, please let me know in the reply form below.

• Anatomy & Physiology
• Astrophysics
• Earth Science
• Environmental Science
• Organic Chemistry
• Precalculus
• Trigonometry
• English Grammar
• U.S. History
• World History

... and beyond

• Socratic Meta
• Featured Answers

What is the difference between degrees and radians on the calculator and why do they affect the answers?

Wolfram|Alpha Widgets Overview Tour Gallery Sign In

Share this page.

• StumbleUpon
• Google Buzz

Output Type

Output width, output height.

To embed this widget in a post, install the Wolfram|Alpha Widget Shortcode Plugin and copy and paste the shortcode above into the HTML source.

To embed a widget in your blog's sidebar, install the Wolfram|Alpha Widget Sidebar Plugin , and copy and paste the Widget ID below into the "id" field:

Save to My Widgets

Build a new widget.

We appreciate your interest in Wolfram|Alpha and will be in touch soon.

Degrees to Radians Converter

Table of contents

Welcome to the Omni degrees to radians converter, a simple tool that assists you in converting degrees to radians.

Are you struggling with converting degrees to radians? Don't worry; you're definitely at the right place! Come along to learn what is a radian, how to convert degrees to radians, and how to use our handy converter!👩‍🏫

How do I convert degrees to radians?

Let's start from the beginning - what is a radian? Radian (represented by the symbol rad) is a standard unit for measuring angles. 1 radian is approximately 57.2958 degrees.

To convert degrees to radians, you can use the following formula:

radians = π/180° × degrees

For instance, if you were trying to determine what is a 90° angle in radians, you would compute the following calculations:

radians = π/180° × 90° = π/2 rad ≈ 1.5708 rad

Sounds cumbersome? Don't worry, Omni degrees to radians converter will do all the work for you!

How does the degrees to radians converter work?

Now that you know how to turn degrees into radians, let's discuss how the degree to radian calculator works; it's pretty straightforward!

All you need to do is enter the degree of your interest, and the degree to radian calculator will convert your input into radians. By default, you can enter your angular unit as degrees, but you can also change the default unit and select the one that best fits your needs!

Other related tools

Do you think the degrees to radians converter is helpful? Try out other related tools:

• Angle converter ;
• Radians to degrees converter ;
• Degrees minutes seconds to decimal degrees converter ;
• Decimal degrees to degrees minutes seconds converter ;
• Degrees to minutes converter ; and
• Degrees to seconds converter .

How do I turn degrees into radians?

To turn degrees into radians:

• Take the value in degrees, and multiply it by π/180°.
• That's all! You have converted degrees to radians.

To turn radians into degrees:

• Take the value in radians, and multiply it by 180°/π.
• Voila! You have converted radians to degrees.

What is 360 degrees in radians?

360 degrees in radians is approximately 6.28319 rad or 2 π rad. If you want to convert degrees in radians, you should take the value in degrees and multiply it by π/180°.

• school Campus Bookshelves
• menu_book Bookshelves
• perm_media Learning Objects
• login Login
• how_to_reg Request Instructor Account
• hub Instructor Commons

Margin Size

• Download Page (PDF)
• Download Full Book (PDF)
• Periodic Table
• Physics Constants
• Scientific Calculator
• Reference & Cite
• Tools expand_more
• Readability

selected template will load here

This action is not available.

4.1: Radians and Degrees

• Last updated
• Save as PDF
• Page ID 3324

• Michael Corral
• Schoolcraft College

\( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \)

\( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)

\( \newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\)

( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\)

\( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\)

\( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\)

\( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\)

\( \newcommand{\Span}{\mathrm{span}}\)

\( \newcommand{\id}{\mathrm{id}}\)

\( \newcommand{\kernel}{\mathrm{null}\,}\)

\( \newcommand{\range}{\mathrm{range}\,}\)

\( \newcommand{\RealPart}{\mathrm{Re}}\)

\( \newcommand{\ImaginaryPart}{\mathrm{Im}}\)

\( \newcommand{\Argument}{\mathrm{Arg}}\)

\( \newcommand{\norm}[1]{\| #1 \|}\)

\( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\AA}{\unicode[.8,0]{x212B}}\)

\( \newcommand{\vectorA}[1]{\vec{#1}}      % arrow\)

\( \newcommand{\vectorAt}[1]{\vec{\text{#1}}}      % arrow\)

\( \newcommand{\vectorB}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \)

\( \newcommand{\vectorC}[1]{\textbf{#1}} \)

\( \newcommand{\vectorD}[1]{\overrightarrow{#1}} \)

\( \newcommand{\vectorDt}[1]{\overrightarrow{\text{#1}}} \)

\( \newcommand{\vectE}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{\mathbf {#1}}}} \)

So far we have been using degrees as our unit of measurement for angles. However, there is another way of measuring angles that is often more convenient. The idea is simple: associate a central angle of a circle with the arc that it intercepts.

Consider a circle of radius \(r>0 \), as in Figure 4.1.1. In geometry you learned that the circumference \(C \) of the circle is \(C = 2\;\pi\;r \), where \(\pi = 3.14159265... \).

In Figure 4.1.1 we see that a central angle of \(90^\circ \) cuts off an arc of length \(\tfrac{\pi}{2}\,r \), a central angle of \(180^\circ \) cuts off an arc of length \(\pi\,r \), and a central angle of \(360^\circ \) cuts off an arc of length \(2\pi\,r \), which is the same as the circumference of the circle. So associating the central angle with its intercepted arc, we could say, for example, that

\[ 360^\circ \quad\text{"equals''}\quad 2\pi\,r \quad\text{(or \(2\pi \) 'radiuses').} \]

The radius \(r \) was arbitrary, but the \(2\pi \) in front of it stays the same. So instead of using the awkward "radiuses'' or "radii'', we use the term radians :

\[\label{4.1} \boxed{360^\circ ~=~ 2\pi ~~\text{radians}}  \]

The above relation gives us any easy way to convert between degrees and radians:

\[\begin{alignat}{3} \textbf{Degrees to radians:}&\quad x~~\text{degrees}\quad&=\quad \left( \frac{\pi}{180} \;\cdot\; x \right) ~~\text{radians}\label{eqn:deg2rad}\\ \textbf{Radians to degrees:}&\quad x~~\text{radians}\quad&=\quad \left( \frac{180}{\pi} \;\cdot\; x \right) ~~\text{degrees}\label{eqn:rad2deg} \end{alignat} \nonumber \]

Equation \ref{eqn:deg2rad} follows by dividing both sides of Equation \ref{4.1} by \(360 \), so that \(1^\circ = \frac{2\pi}{360} = \frac{\pi}{180} \) radians, then multiplying both sides by \(x \). Equation \ref{eqn:rad2deg} is similarly derived by dividing both sides of Equation \ref{4.1} by \(2\pi \) then multiplying both sides by \(x \).

The statement \(\theta = 2\pi \) radians is usually abbreviated as \(\theta = 2\pi \) rad, or just \(\theta = 2\pi \) when it is clear that we are using radians. When an angle is given as some multiple of \(\pi \), you can assume that the units being used are radians.

Example 4.1

Convert \(18^\circ \) to radians.

Using the conversion Equation \ref{eqn:deg2rad} for degrees to radians, we get

\[18^\circ ~=~ \frac{\pi}{180} \;\cdot\; 18 ~=~ \boxed{\frac{\pi}{10} ~~\text{rad}} ~. \nonumber \]

Example 4.2

Convert \(\frac{\pi}{9} \) radians to degrees.

Using the conversion Equation \ref{eqn:rad2deg} for radians to degrees, we get

\[\frac{\pi}{9} ~~\text{rad} ~=~ \frac{180}{\pi} \;\cdot\; \frac{\pi}{9} ~=~ \boxed{20^\circ} ~.\nonumber \]

Table 4.1 Commonly used angles in radians

Table 4.1 shows the conversion between degrees and radians for some common angles. Using the conversion Equation \ref{eqn:rad2deg} for radians to degrees, we see that

\[ 1 ~~\text{radian} ~~=~~ \frac{180}{\pi}~~\text{degrees} ~~\approx~~ 57.3^\circ ~. \nonumber \]

Formally, a radian is defined as the central angle in a circle of radius \(r \) which intercepts an arc of length \(r \), as in Figure 4.1.2. This definition does not depend on the choice of \(r\) (imagine resizing Figure 4.1.2). One reason why radians are used is that the scale is smaller than for degrees. One revolution in radians is \(2\pi \approx 6.283185307 \), which is much smaller than \(360 \), the number of degrees in one revolution. The smaller scale makes the graphs of trigonometric functions (which we will discuss in Chapter 5) have similar scales for the horizontal and vertical axes. Another reason is that often in physical applications the variables being used are in terms of arc length, which makes radians a natural choice.

The default mode in most scientific calculators is to use degrees for entering angles. On many calculators there is a button labeled \(\fbox{\( DRG\)}\) for switching between degree mode (D), radian mode (R), and gradian mode (G). On some graphing calculators, such as the the TI-83, there is a \(\fbox{\(MODE\)}\) button for changing between degrees and radians. Make sure that your calculator is in the correct angle mode before entering angles, or your answers will likely be way off. For example,

\[\begin{align*} \sin\;4^\circ ~&=~ \phantom{-}0.0698 ~,\\  \sin\;(4~\text{rad}) ~&=~ -0.7568 ~, \end{align*} \]

so the values are not only off in magnitude, but do not even have the same sign. Using your calculator's \(\fbox{\(\sin^{-1}\)}\), \(\fbox{\(\cos^{-1}\)}\), and \(\fbox{\(\tan^{-1}\)}\) buttons in radian mode will of course give you the angle as a decimal, not an expression in terms of \(\pi \).

You should also be aware that the math functions in many computer programming languages use radians, so you would have to write your own angle conversions.

Should my calculator be in radians or degrees for physics?

If there is a degree symbol, you should have your calculator in degree mode. If the input is in degrees (the circle symbol), use degree mode, otherwise use radian mode.

Is radians used in physics?

Physics. The radian is widely used in physics when angular measurements are required. For example, angular velocity is typically measured in radians per second (rad/s). One revolution per second is equal to 2π radians per second.

How do you know when to use degrees or radians?

Why do physicist usually use radians instead of degrees for measuring angles?

Radians make it possible to relate a linear measure and an angle measure. A unit circle is a circle whose radius is one unit. The one-unit radius is the same as one unit along the circumference.

Why would you use radians instead of degrees?

Radians have the following benefits: They are dimensionless, which means that they can be treated just as numbers (although you still do not want to confuse Hertz with radians per second). Radians give a very natural description of an angle (whereas the idea of 360 degrees making a full rotation is very arbitrary).

Should calculator be in degrees or radians for trig?

Any angle plugged into a trig function must be in radians but, because degrees are so common outside of a math class, calculators are designed to handle degrees inside trig functions.

How do you find radians in physics?

Formula of Radian Firstly, One radian = 180/PI degrees and one degree = PI/180 radians. Therefore, for converting a specific number of degrees in radians, multiply the number of degrees by PI/180 (for example, 90 degrees = 90 x PI/180 radians = PI/2).

Should I have my calculator in radians or degrees for SAT?

It will depend on the question. A question with angles in degrees needs the calculator to be in degrees, and a question with angles in radians needs the calculator to be in radians. Degrees are more common on the SAT than radians though.

What is the advantage of using radians?

Why You Use Radians? The biggest advantage offered by radians is that they are the natural measure for dividing a circle. If you take the radius of a given circle and bend it into an arc that lies on the circumference, you would need just over six of them to go completely around the circle.

What is the difference between radian and degree on a calculator?

Remember, degrees are based off of a circle measured in 360 degrees, while radians measure that same circle as fractions of 2pi. To quickly check to see if you are in degrees, you can take the sin(90). If you get 1, you’re in degrees. If you get 0.89, then you’re in radians.

What is the difference between 1 radian and 1 degree?

Radian is a unit of measurement of an angle, where one radian is the angle made at the center of a circle by an arc and length equal to the radius of the circle. The degree is another unit that is for the measurement of an angle. When converted from 1 radian to degrees, we have 1 radian equal to 57.296 degrees.

Why is a circle 2pi radians?

1 Radian is the angle that an arc the same length as the radius of the circle will make. And since, as you pointed out, the ratio of diameter to circumference is [pi], and the radius is 1/2 the diameter, there are 2[pi] radians to a circle.

Why are radians dimensionless?

A radian is dimensionless because it describes a certain arc of a circle, regardless of whether that arc is the size of your thumb or the size of the known universe.

Why is 360 2pi?

Why is pi radians equal to 180 degrees?

The value of 180 degrees in radians is π. Because 2π = 360 degrees. When we divide both sides by 2, we get π = 180 degrees.

Why do we use degrees?

So, how do we measure angles? Well, the Babylonians had an idea. They decided to cut a circle into 360 pieces, and call one of those pieces a degree. This makes it easy to talk about the size of an angle.

What are radians simply explained?

Well, a Radian, simply put, is a unit of measure for angles that is based on the radius of a circle. What this means is that if we imagine taking the length of the radius and wrapping it around a circle, the angle that is formed at the centre of the circle by this arc is equal to 1 Radian.

What is a radian and how is it used to measure an angle?

What mode should my calculator be in trigonometry?

Finding the Cosine Ratio For graphing calculators, press “Mode.” If you are using degrees (generally, if you are in geometry), the calculator should be set to degrees or “deg.” If you are using radians (precalculus or trigonometry), it should be set to radians or “rad.”

What mode should my calculator be in for GCSE maths?

What mode should my calculator be on for a GCSE exam? Default settings. If you have a casio, press shift and 9, then 1 to clear setup and = for yes.

How do I know if my calculator is in degree mode?

What is radian in physics class 11?

Radian Measure Definition Angle subtended at the centre by an arc of length 1 unit in a unit circle (circle of radius 1 unit) is said to have a measure of 1 radian.

What is radian and steradian in physics?

The steradian (symbol: sr) or square radian is the unit of solid angle in the International System of Units (SI). It is used in three-dimensional geometry, and is analogous to the radian, which quantifies planar angles.

What is 1 radian in terms of pi?

Radian is the standard unit of angular measurement. A straight angle is Pi radians (1/2 cycles or turns). This means that 1 radian = 180/pi degrees. A full circle (One cycle or turn) has 2*Pi radians (360 degrees).

Do you need to memorize the unit circle for the SAT?

Some of the College Board’s free practice tests do not feature a single question requiring knowledge of the unit circle. That said, if you want a perfect score on the SAT Math Test, you should feel confident in virtually any topic that the SAT might throw on their test, including the unit circle.

Privacy Overview

Scientific Calculator

This is a very powerful Scientific Calculator You can use it like a normal calculator, or you can type formulas like (3+7^2)*2 It has many functions you can type in ( see below )

• Type in 12+2*3 (=18)
• Select "deg", type in cos(45) (=0.7071067811865476)
• Type in 2/sqrt(2) (=1.414213562373095)

Function Reference

A function will return NaN (Not a Number) when you give it invalid entries, such as sqrt(−1)

Solver Title

Generating PDF...

• Pre Algebra Order of Operations Factors & Primes Fractions Long Arithmetic Decimals Exponents & Radicals Ratios & Proportions Percent Modulo Number Line Expanded Form Mean, Median & Mode
• Algebra Equations Inequalities System of Equations System of Inequalities Basic Operations Algebraic Properties Partial Fractions Polynomials Rational Expressions Sequences Power Sums Interval Notation Pi (Product) Notation Induction Logical Sets Word Problems
• Pre Calculus Equations Inequalities Scientific Calculator Scientific Notation Arithmetics Complex Numbers Polar/Cartesian Simultaneous Equations System of Inequalities Polynomials Rationales Functions Arithmetic & Comp. Coordinate Geometry Plane Geometry Solid Geometry Conic Sections Trigonometry
• Calculus Derivatives Derivative Applications Limits Integrals Integral Applications Integral Approximation Series ODE Multivariable Calculus Laplace Transform Taylor/Maclaurin Series Fourier Series Fourier Transform
• Functions Line Equations Functions Arithmetic & Comp. Conic Sections Transformation
• Linear Algebra Matrices Vectors
• Trigonometry Identities Proving Identities Trig Equations Trig Inequalities Evaluate Functions Simplify
• Statistics Mean Geometric Mean Quadratic Mean Average Median Mode Order Minimum Maximum Probability Mid-Range Range Standard Deviation Variance Lower Quartile Upper Quartile Interquartile Range Midhinge Standard Normal Distribution
• Physics Mechanics
• Chemistry Chemical Reactions Chemical Properties
• Finance Simple Interest Compound Interest Present Value Future Value
• Economics Point of Diminishing Return
• Conversions Roman Numerals Radical to Exponent Exponent to Radical To Fraction To Decimal To Mixed Number To Improper Fraction Radians to Degrees Degrees to Radians Hexadecimal Scientific Notation Distance Weight Time Volume
• Pre Algebra
• Pre Calculus
• Linear Algebra
• Trigonometry
• Pythagorean
• Angle Sum/Difference
• Double Angle
• Multiple Angle
• Negative Angle
• Sum to Product
• Product to Sum
• Proving Identities
• Trigonometric Equations
• Trig Inequalities
• Evaluate Functions
• Conversions

Most Used Actions

Number line.

• simplify\:\frac{\sin^4(x)-\cos^4(x)}{\sin^2(x)-\cos^2(x)}
• simplify\:\frac{\sec(x)\sin^2(x)}{1+\sec(x)}
• \sin (x)+\sin (\frac{x}{2})=0,\:0\le \:x\le \:2\pi
• \cos (x)-\sin (x)=0
• 3\tan ^3(A)-\tan (A)=0,\:A\in \:\left[0,\:360\right]
• \sin (75)\cos (15)
• \csc (-\frac{53\pi }{6})
• prove\:\tan^2(x)-\sin^2(x)=\tan^2(x)\sin^2(x)
• prove\:\cot(2x)=\frac{1-\tan^2(x)}{2\tan(x)}
• prove\:\csc(2x)=\frac{\sec(x)}{2\sin(x)}

trigonometry-calculator

degree to radian

• Spinning The Unit Circle (Evaluating Trig Functions ) If you’ve ever taken a ferris wheel ride then you know about periodic motion, you go up and down over and over...

Please add a message.

Message received. Thanks for the feedback.