# Documentation/How Tos/Calc: IMCOSH function

From Apache OpenOffice Wiki

## IMCOSH

Returns the hyperbolic cosine of a complex number.

### Syntax

`IMCOSH( z )`

- where z is a complex number as described in Documentation/How_Tos/Calc:_Complex_Number_functions

### Sematics

`IMCOSH("a+bj")`

calculates

### Issues

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.