Documentation/How Tos/Calc: IMCOSH function
From Apache OpenOffice Wiki
Returns the hyperbolic cosine of a complex number.
IMCOSH( z )
- where z is a complex number as described in Documentation/How_Tos/Calc:_Complex_Number_functions
The function is not implemented in versions before AOO 4.0 and before LibO 3.7.
This function currently appears in the AddIn category of the Function Wizard.