PHP Manußl
P°edchßzejφcφDal╣φ

atan2

(PHP 3>= 3.0.5, PHP 4 )

atan2 -- arc tangent of two variables

Description

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).

See also acos() and atan().

P°edchßzejφcφDom∙Dal╣φ
atanNahorubase_convert