# Coth

## Description

The coth(x) function is the hyperbolic cotangent of x.

## Syntax

double coth(double x)

## Parameters

x

x is any non-zero real number. Note that numbers whose absolute value is greater than about 710 return 1/-1.

## Return

Returns the hyperbolic cotangent of x.

## Example

val = coth(-.909); // val will have a value of ~-1.3876