# Documentation/How Tos/Calc: ACOTH function

From Apache OpenOffice Wiki

## ACOTH

Returns the inverse hyperbolic cotangent of the given number.

### Syntax:

**ACOTH(number)**

- Returns the inverse hyperbolic cotangent of
, in other words the number whose hyperbolic cotangent is**number**.**number**

- An error results if
is between**number**and**-1**inclusive.**1**

### Example:

**ACOTH(1.1)**

- returns the inverse hyperbolic cotangent of
, approximately**1.1**.**1.52226**