# csch

Hyperbolic cosecant.

## Syntax

* res = csch(x)

## Input argument

* x - a numeric value

## Output argument

* res - a numeric value

## Description

**csch** computes the hyperbolic cosecant for each element of **x**.

## Example

```matlab
X = [3*pi, 2*pi, pi, 0];
R = csch(X)
```

## See also

[cosh](https://github.com/Nelson-numerical-software/nelson-gitbook/blob/master/en/trigonometric_functions/cosh.html), [sinh](https://github.com/Nelson-numerical-software/nelson-gitbook/blob/master/en/trigonometric_functions/sinh.html).

## History

| Version | Description     |
| ------- | --------------- |
| 1.0.0   | initial version |

## Author

Allan CORNET
