# Cotangent

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## Trigonometry

In trigonometry, the **cotangent** is a function (see trigonometric function) defined as:

### Derivative

The derivative of the cotangent is:

The Cotangent reference article from the English Wikipedia on 24-Jul-2004(provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org) |

Table of contents |

2 See also 3 External link |

In trigonometry, the **cotangent** is a function (see trigonometric function) defined as: