Contents

1 Trigonometry 1.1 Derivative 2 See also 3 External link

Trigonometry

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

or

An interpretation of the cotangent of an angle x is as follows. In a right triangle with one angle equal to x, cot x is the ratio of the length of the leg adjacent to the angle x to the leg opposite the angle x.

Derivative

The derivative of the cotangent is:

where csc is the cosecant.

See also

• Tangent

External link

• MathWorld: Cotangent http://mathworld.wolfram.com/Cotangent.html