The in-built **```atanh()``` function** from the ```math``` module in Python is used to return the inverse hyperbolic tangent of a number in radians.

Figure 1 shows the mathematical representation of the ```atanh()``` function.

# Syntax ###

``` python 
math.atanh(x)
```

# Parameter
This function requires a positive or negative **```number```** between -0.99 and 0.99.

# Return value 
```atanh(x)``` returns a **```float``` value** that is the inverse hyperbolic tangent of the number sent as a parameter.

import math

#Parameter as a positive number
print ("The value of atanh(0.3) is:", math.atanh(0.3))

#Parameter as a negative number
print ("The value of atanh(-0.9) is:", math.atanh(-0.9))

What is math.atanh() in Python?

Returns the inverse hyperbolic tangent of a number between -0.99 and 0.99 as a float.

What is math.atanh() in Python?

Syntax

Parameter

Return value

Example