MATLAB Function Reference |

**Syntax**

**Description**

```
Y = acoth(X)
```

returns the inverse hyperbolic cotangent for each element of `X`

.

The `acoth`

function operates element-wise on arrays. The function's domains and ranges include complex values. All angles are in radians.

**Examples**

Graph the inverse hyperbolic cotangent over the domains` `

and .

**Definition**

The hyperbolic inverse cotangent can be defined as

**Algorithm**

`acoth`

uses FDLIBM, which was developed at SunSoft, a Sun Microsystems, Inc. business, by Kwok C. Ng, and others. For information about FDLIBM, see http://www.netlib.org.

**See Also**

acotd | acsc |

© 1994-2005 The MathWorks, Inc.