## How do you put Desmos into radian mode?

Desmos launches in radians mode by default. Switch to degrees mode. Cross multiply and one gets y = r sin( θ ).

## How many radians are in a circle?

2 radians
The size of a radian is determined by the requirement that there are 2 radians in a circle. Thus 2 radians equals 360 degrees. This means that 1 radian = 180/ degrees, and 1 degree = /180 radians.

How do you draw angles on Desmos?

Follow the steps below:

1. Enter a value in degrees to estimate the given angle measurement.
2. Click the “Check Estimation” button to see how close your estimate is.
3. Click on your answer to bring up a new angle.
4. Erase your previous answer and enter an estimate for the new angle.

### How do you graph cos 2x on a calculator?

To enter cos2x into your calculator, calculate cos x and square it. For an algebraic solution write y = cos x and then the equation becomes 2 y2 – 3 y – 4 = 0.

### What calculator is best for trigonometry?

The TI-83 Plus graphing calculator is a great entry-level calculator for middle and high school students taking math and science courses such as Pre-Algebra, Algebra 1 & 2, Trigonometry, Calculus, Statistics, Biology, Chemistry and Physics.

What are radians on a graph?

Description. Radians function. RADIANS(x) converts an angle x expressed in degrees to radians. The relation between the 2 units is as follows: 2 x Pi radians = 360 degrees.

## What are the 5 key points when you graph the sine function?

They are the three x-intercepts, the maximum point, and the minimum point. All of these are on your unit circle. The values of sin x correspond to the y-values, so those key points are (angle, y-value) or (0,0), (π/2, 1), (π, 0), (3π/2, -1), (2π, 0).

## How do you put degrees in a calculator?

To put most models of scientific calculators in degree mode, all you have to do is press “Mode” and then look at the numbers on the screen beside the menu items. Locate the number beside “Deg” or “Degrees” and press it to change the mode of your calculator.

How many radians is 720?

4π radians
Therefore, 720∘ in radians equal to 4π radians.