# IMCOSH

## Content

This function calculates the hyperbolic cosine of the specified complex number.

## Syntax

`IMCOSH(complex_num)`

## Arguments

The *complex\_num* argument is a complex number to return the hyperbolic cosine for.

## Remarks

An error is returned if the *complex\_num* argument is not in the form "x+yi" or "x+yj".

## Data Types

Accepts numeric and string data. Returns string data.

## Examples

`IMCOSH("8-3i")` gives the result -1475.563

`IMCOSH("7-2i")` gives the result -228.180