Developer's Daily | Unix by Example |
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cos ? cosine function |
#include <math.h> double cos(double x); |
The cos() function returns the cosine of x, where x is given in radians. |
The cos() function returns a value between ?1 and 1. |
SVID 3, POSIX, BSD 4.3, ISO 9899 |
acos(3), asin(3), atan(3), atan2(3), sin(3), tan(3) |