redhat man page for cosh

COSH(3) 						     Linux Programmer's Manual							   COSH(3)

NAME
       cosh - hyperbolic cosine function

SYNOPSIS
       #include <math.h>

       double cosh(double x);

DESCRIPTION
       The cosh() function returns the hyperbolic cosine of x, which is defined mathematically as (exp(x) + exp(-x)) / 2.

CONFORMING TO
       SVID 3, POSIX, BSD 4.3, ISO 9899 (C99)

SEE ALSO
       acosh(3), asinh(3), atanh(3), sinh(3), tanh(3)

								    1993-06-13								   COSH(3)