atan
From C/C++ Reference
atan
Syntax:
#include <cmath> double atan( double arg );
The function atan() returns the arc tangent of arg, which will be in the range [-pi/2, +pi/2].
Related topics:
From C/C++ Reference
#include <cmath> double atan( double arg );
The function atan() returns the arc tangent of arg, which will be in the range [-pi/2, +pi/2].