# ATANH function: Description, Usage, Syntax, Examples and Explanation

## What is ATANH function in Excel?

ATANH function is one of the Math and Trig functions in Microsoft Excel that returns the inverse hyperbolic tangent of a number. Number must be between -1 and 1 (excluding -1 and 1). The inverse hyperbolic tangent is the value whose hyperbolic tangent is number, so ATANH(TANH(number)) equals number.

## Syntax of ATANH function

ATANH(number)

The ATANH function syntax has the following arguments:

**Number:**Any real number between 1 and -1.

## Example of ATANH function

Steps to follow:

1. Open a new Excel worksheet.

2. Copy data in the following table below and paste it in cell A1

Note: For formulas to show results, select them, press F2 key on your keyboard and then press Enter.

You can adjust the column widths to see all the data, if need be.

Formula |
Description |
Result |

=ATANH(0.76159416) | Inverse hyperbolic tangent of 0.76159416 | 1.00000001 |

=ATANH(-0.1) | -0.100335348 |