# JavaScript Math atanh() Method

The Javascript Math.atanh() method is used to return the hyperbolic arctangent of a number. The atanh() is a static method of Math, therefore it is always used as Math.atanh(), rather than as a method of a Math object created.

`Math.atanh (x) = arctanh(x) = y such that tanh (y) = x`

Syntax:

`Math.atanh(value)`

Parameters: This method accepts a single parameter as mentioned above and described below:

• value: This parameter holds the number whose hyperbolic arc-tangent you want to know.

Returns: It returns the hyperbolic arc-tangent of the given number.

Below are examples of the Math.atanh() Method.

Example 1: This example shows the hyperbolic arctangent when 1 is passed as a parameter.

## Javascript

 `console.log(``"When 1 is passed as a parameter: "``    ``+ Math.atanh(1));`

Output
```When 1 is passed as a parameter: Infinity

```

Example 2: This example shows the hyperbolic arctangent when 0 is passed as a parameter.

## Javascript

 `console.log(``"When 0 is passed as a parameter: "``    ``+ Math.atanh(0));`

Output
```When 0 is passed as a parameter: 0

```

Example 3: This example shows the hyperbolic arctangent when 2 is passed as a parameter.

## Javascript

 `console.log(``"When 2 is passed as a parameter: "``     ``+ Math.atanh(2));`

Output
```When 2 is passed as a parameter: NaN

```

Example 4: This example shows the hyperbolic arctangent when 0.5 is passed as a parameter.

## Javascript

 `console.log(``"When 0.5 is passed as a parameter: "``    ``+ Math.atanh(0.5));`

Output
```When 0.5 is passed as a parameter: 0.5493061443340548

```

We have a complete list of Javascript Math Objects methods, to check those please go through this Javascript Math Object Complete reference article.

Supported Browsers: