# Python program to convert degree to radian

Python example to convert degrees to radians and vice versa.

## Objective

Write a Python program to ** convert degrees to radians**.

## What is a Radian?

A radian is the measure of the central angle of a circle, whose arc length is the same as the radius of the circle.

** 1 radian is equal to 57.3 degrees**.

## Method 1

**Code**

```
pi = 22/7
degrees = 5
radians = degrees * pi / 180
print(radians)
```

**Output**

`0.0873015873015873`

## Method 2 - Asking user input

**Code**

```
pi = 22/7
degrees = float(input("Input degrees ==> "))
radians = degrees * pi / 180
print(radians)
```

**Output**

```
Input degrees ==> 23
0.40158730158730155
```

## Method 3 - Using the math module

You can also use the `degrees`

and `radians`

functions from the `math`

module.

- Use
`degrees`

function to convert radians to degrees. - Use
`radians`

function to convert degrees to radians.

### Converting degrees to radians

**Code/Output**

```
import math
#0 radians == 0 degrees
math.degrees(0)
>>> 0.0
#pi/2 radians is 90 degrees
math.degrees(math.pi/2)
>>> 90.0
#pi radians is 180 degrees
math.degrees(math.pi)
>>> 180.0
#pi+pi/2 radians is 270 degrees
math.degrees(math.pi+(math.pi/2))
>>> 270.0
#2*pi radians is 360 degrees
math.degrees(math.pi+math.pi)
>>> 360.0
```

### Converting radians to degrees

**Code/Output**

```
# Converting radians to degrees
import math
#0 degrees == 0 radians
math.radians(0)
>>> 0.0
#90 degrees is pi/2 radians
math.radians(90)
>>> 1.5707963267948966
#180 degrees is pi radians
math.radians(180)
>>> 3.141592653589793
#270 degrees is pi+(pi/2) radians
math.radians(270)
>>> 4.71238898038469
#360 degrees is 2*pi radians
math.radians(360)
>>> 6.283185307179586
```