Python Number atan() Method

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Description

Python number method atan() returns the arc tangent of x, in radians.

Syntax

Following is the syntax for atan() method −

atan(x)

Note − This function is not accessible directly, so we need to import math module and then we need to call this function using math static object.

Parameters

• x − This must be a numeric value.

Return Value

This method returns arc tangent of x, in radians.

Example

The following example shows the usage of atan() method.

#!/usr/bin/python
import math

print "atan(0.64) : ",  math.atan(0.64)
print "atan(0) : ",  math.atan(0)
print "atan(10) : ",  math.atan(10)
print "atan(-1) : ",  math.atan(-1)
print "atan(1) : ",  math.atan(1)

When we run above program, it produces following result −

atan(0.64) :  0.569313191101
atan(0) :  0.0
atan(10) :  1.4711276743
atan(-1) :  -0.785398163397
atan(1) :  0.785398163397