NumPy - arctan() function
The NumPy arctan() function is used to calculate arc tangent (inverse tangent) of given value. The returned value will be in the range -𝜋/2 through 𝜋/2.
Syntax
numpy.arctan(x, out=None)
Parameters
x |
Required. Specify array (array_like) containing elements, of which the arc tangent is calculated. |
out |
Optional. Specify a location into which the result is stored. If provided, it must have a shape that the inputs broadcast to. If not provided or None, a freshly-allocated array is returned. |
Return Value
Returns the inverse tangent of each element in x.
Example:
In the example below, numpy arctan() function is used to calculate the inverse tangent of each element present in array tanArr.
import numpy as np
Arr = np.array([0, 30, 60, 90])
#converting the angles in radians
Arr = Arr*np.pi/180
tanArr = np.tan(Arr)
inv_tanArr = np.arctan(tanArr)
print("The tan value of angles:")
print(tanArr)
print("The inverse of the tan value (in radians):")
print(inv_tanArr)
print("The inverse of the tan value (in degrees):")
print(np.degrees(inv_tanArr))
The output of the above code will be:
The tan value of angles: [ 0.00000000e+00 5.77350269e-01 1.73205081e+00 1.63312394e+16] The inverse of the tan value (in radians): [ 0. 0.52359878 1.04719755 1.57079633] The inverse of the tan value (in degrees): [ 0. 30. 60. 90.]
❮ NumPy - Functions
