Syntax #include <math.h> double acos(double x); float acosf(float x);
#include <math.h> double acos(double x); float acosf(float x);
Arguments x (in the range of -1 to 1)
x (in the range of -1 to 1)
Return Value Arc cosine (in the range of 0 to pi)
Arc cosine (in the range of 0 to pi)
Description
Returns the arc cosine of the specified argument.