The C program shell below is for a program that uses two functions as described using the

formula in $(1)$ accurate to $4$ decimal locations. The values of the angle, $\backslash$theta $,$ in $(1)$ is in radians.

You MUST use the provided structure.

cosh$(\backslash$theta $)=$

k$=0$

$\backslash$infty

$\backslash$theta

$2$ k

$(2$ k $)!$