cos

Calculates the cosine.

double cos (double x);

Required Header
<math.h>

Return Value

This function returns the cosine of a double in radians.

Parameters

x

  The value to be converted

Remarks

The cos function calculates the cosine of x to 15 digits of precision.

Mathematics

See Also    asin, acos, atan, atan2, sin, tan, sinh, cosh, tanh, cot