COSH function
COSH returns the hyperbolic cosine of a number.
Syntax
COSH (number)
This function returns the hyperbolic cosine of a number.
Example
=COSH(4) returns 27.30823.
=COSH(EXP(1)) returns 7.610125. The hyperbolic cosine of the base of the natural logarithm is 0.5.