# cotangent

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Related to cotangent: cosecant, Inverse cotangent, secant

## cotangent:

see trigonometrytrigonometry
[Gr.,=measurement of triangles], a specialized area of geometry concerned with the properties of and relations among the parts of a triangle. Spherical trigonometry is concerned with the study of triangles on the surface of a sphere rather than in the plane; it is
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.

## Cotangent

one of the trigonometric functions; denoted by cot or ctn. The cotangent of an acute angle in a right triangle is the ratio of the adjacent side to the opposite side.

## cotangent

[kō′tan·jənt]
(mathematics)
The reciprocal of the tangent. Denoted cot; ctn.

## cotangent

(of an angle) a trigonometric function that in a right-angled triangle is the ratio of the length of the adjacent side to that of the opposite side; the reciprocal of tangent
References in periodicals archive ?
M and TM denote respectively the cotangent bundle and the tangent bundle of M.
The first piece formally issued by CoTangent Press, however, was a thing of heavy metal: an austere prison ballad, The Convict Bird, which purports to address its bleak and minatory stanzas to a readership of children.
Jaccard, Dice, cosine and cotangent similarity measures between two vectors are stated as follows.
The above relations among the parameters are required in order to prove the U(1, 1) group composition law of the transformations in order to have a truly Maximal-Acceleration Phase Space Relativity theory resulting from a Phase-Space change of coordinates in the cotangent bundle of spacetime.
Then, gr(M) is a coherent module over [Mathematical Expression Omitted], and hence corresponds to a coherent module on the logarithmic cotangent bundle
Let T*M be its cotangent bundle, with canonical 1-form
We distinguish between the cotangent cohomology groups [T.
Pramanik and Mondal  presented cotangent similarity measure of rough neutrosophic sets and its application to medical diagnosis.
We denote by T and T* its tangent and cotangent bundles.
Pramanik and Mondal  also proposed cotangent similarity measure of rough neutrosophic sets and its application to medical diagnosis.
Further, Tian  developed the cotangent similarity measure of IFSs and applied it to medical diagnosis.
Another mathematician, Habash al-Hasib, in the 9th century developed the first table for tangents and cotangents (Joseph, 2011).

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