cos(3M)

NAME

     cos - cosine function

SYNOPSIS

     cc [ flag ... ] file ... -lm [ library ... ]
     #include <math.h>

     double cos(double x);

DESCRIPTION

     The cos() function computes the cosine  of  x,  measured  in
     radians.

RETURN VALUES

     Upon successful completion, cos() returns the cosine of x.

     If x is NaN or _Inf, NaN is returned.

ERRORS

     No errors will occur.

ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|

SEE ALSO

     acos(3M), isnan(3M), sin(3M), tan(3M), attributes(5)