WorksheetFunction.Acosh (Excel)

Returns the inverse hyperbolic cosine of a number. Number must be greater than or equal to 1. The inverse hyperbolic cosine is the value whose hyperbolic cosine is Arg1, so Acosh(Cosh(number)) equals Arg1.

Acosh (Arg1)

Arg1: Any real number equal to or greater than 1.

Dim dblArg1 As Double: dblArg1 = 
Dim dblAcosh As Double
dblAcosh = WorksheetFunction.Acosh(Arg1:=dblArg1)