Python math.atan() – Arc / Inverse Tangent

Python math.atan()

math.atan() function returns the inverse tangent of given number.

The return value is angle in radians, and lies in [-pi/2, pi/2] radians.

Syntax

The syntax to call atan() function is

math.atan(x)

where

ParameterRequiredDescription
xYesA number in the range [-inf, inf].

Examples

In the following example, we find the inverse tangent of 1.732 using atan() function of math module.

Python Program

import math

x = 1.732
result = math.atan(x)
print('atan(x) :', result, 'radians')
Run

Output

atan(x) : 1.0471848490249274 radians

We can convert the returned radians into degrees using math.degrees() function.

In the following example, we find the inverse tangent of 1.732 using atan() function and convert this returned radians to degrees.

Python Program

import math

x = 1.732
result = math.atan(x)
result = math.degrees(result)
print('atan(x) :', result, 'degrees')
Run

Output

atan(x) : 59.99927221917264 degrees

Summary

In this Python Examples tutorial, we learned the syntax of, and examples for math.atan() function.