The ** tanh() function** in Python returns a number’s hyperbolic tangent. To be more specific, it returns the hyperbolic tangent of a number in radians.

Figure 1 shows the mathematical representation of the `tanh()`

function.

Note: The

`math`

module is required for this function.

```
tanh(num)
```

This function requires a `number`

that represents an `angle`

in `radians`

as a parameter.

To convert `degrees`

to `radians`

, use:

```
radians = degrees * ( PI / 180.0 )
```

`tanh()`

returns the `hyperbolic tangent`

of a number `(radians)`

that is set as a parameter.

import math#positive number in radiansprint "The value of tanh(2.3) : ", math.tanh(2.3)#negative number in radiansprint "The value of tanh(-2.3) : ", math.tanh(-2.3)#converting the degrees angle into radians and then applying tanh()#degrees = 45#PI = 3.14159265result = 45.0 * (math.pi / 180.0)print "The value of tanh("+str(result)+") : ", math.tanh(result)

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