The COSH function returns the hyperbolic cosine of a number.
COSH(num)
num: A number value.
Examples
=COSH(0) returns 1.
=COSH(1) returns 1.54308063481524.
=COSH(5) returns 74.2099485247878.
=COSH(10) returns 11,013.2329201033.
