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Python Number atan2() Function


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Description:

This function returns atan(y / x), in radians.

Syntax:

atan2(x, y)

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:

Here is the detail of parameters:

  • x: Must be a numeric value

  • y: Must be a numeric value

Return Value:

The atan(y / x), in radians.

Example:

#!/usr/bin/python
import math

print "atan2(-0.50,-0.50) : ",  math.atan2(-0.50,-0.50)
print "atan2(0.50,0.50) : ",  math.atan2(0.50,0.50)
print "atan2(5,5) : ",  math.atan2(5,5)
print "atan2(-10,10) : ",  math.atan2(-10,10)
print "atan2(10,20) : ",  math.atan2(10,20)

This will produce following result:

atan2(-0.50,-0.50) :  -2.35619449019
atan2(0.50,0.50) :  0.785398163397
atan2(5,5) :  0.785398163397
atan2(-10,10) :  -0.785398163397
atan2(10,20) :  0.463647609001


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