asin
Syntax:
#include <cmath> double asin( double arg );
The asin() function returns the arc sine of arg, which will be in the range [- pi/2, +pi/2]. arg should be between -1 and 1. If arg is outside this range, asin() returns NAN and raises a floating-point exception.
Related Topics: acos, atan, atan2, cos, cosh, sin, sinh, tan, tanh