Last modified on 19 July 2010, at 11:04

C++ Programming/Code/Standard C Library/Functions/cos


#include <cmath>
float cos( float arg );
double cos( double arg );
long double cos( long double arg );

The cos() function returns the cosine of arg, where arg is expressed in radians. The return value of cos() is in the range [-1,1]. If arg is infinite, cos() will return NAN and raise a floating-point exception.

Related topics
acos - asin - atan - atan2 - cosh - sin - sinh - tan - tanh