Hyperbolic tangent

# tanh

(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)

tanh — Hyperbolic tangent

### Description

tanh(float `$num`): float

Returns the hyperbolic tangent of `num`, defined as `sinh($num)/cosh($num)`.

### Parameters

`num`

  The argument to process

### Return Values

The hyperbolic tangent of `num`

### See Also

- tan() - Tangent
- atanh() - Inverse hyperbolic tangent
- sinh() - Hyperbolic sine
- cosh() - Hyperbolic cosine

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