• Last Updated : 04 Dec, 2020

The numpy.radians() is a mathematical function that helps user to convert angles from degree to radians.

Syntax : numpy.radians(x[, out]) = ufunc ‘radians’)
Parameters :

array : [array_like] elements are in degrees.
out : [ndaaray, optional]Output array of same shape as x.
2pi Radians = 36o degrees

Return : An array with radian values in place of degree values.

Code #1 : Working

 `# Python3 program explaining``# degrees() function`` ` `import` `numpy as np``import` `math`` ` `in_array ``=` `np.arange(``10.``) ``*` `90``print` `(``"Degree values : \n"``, in_array)`` ` `radian_Values ``=` `np.radians(in_array)``print` `(``"\nRadian values : \n"``, radian_Values)`

Output :

```Degree values :
[   0.   90.  180.  270.  360.  450.  540.  630.  720.  810.]

[  0.           1.57079633   3.14159265   4.71238898   6.28318531
7.85398163   9.42477796  10.99557429  12.56637061  14.13716694]
```

numpy.deg2rad(x[, out]) = ufunc ‘deg2rad’) : This mathematical function helps user to convert angles from degrees to radians

Parameters :

array : [array_like] elements are in radians.
out : [ndaaray, optional]Output array of same shape as x.
2pi Radians = 36o degrees

Return : Corresponding angles in radians.

Code #2 : deg2rad() Equivalent to radians()

 `# Python3 program explaining``# rad2deg() function`` ` `import` `numpy as np``import` `math`` ` `degree ``=` `np.arange(``10.``) ``*` `90``print` `(``"Degree values : \n"``, degree)`` ` `radian ``=` `np.deg2rad(degree)``print` `(``"\nradian values : \n"``, radian)`

Output :

```Degree values :
[   0.   90.  180.  270.  360.  450.  540.  630.  720.  810.]