PYTHON atan2

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Python replacement for PHP's atan2 [ edit | history ]
import math
math.atan2(y, x)

PHP atan2

PHP original manual for atan2 [ show | ]


(PHP 4, PHP 5)

atan2Arc tangent of two variables


float atan2 ( float $y , float $x )

This function calculates the arc tangent of the two variables x and y . It is similar to calculating the arc tangent of y / x , except that the signs of both arguments are used to determine the quadrant of the result.

The function returns the result in radians, which is between -PI and PI (inclusive).



Dividend parameter


Divisor parameter

Return Values

The arc tangent of y /x in radians.

See Also