# cosine

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## cosine:

see trigonometry**trigonometry**

[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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## cosine

*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 hypotenuse; the sine of the complement

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

## COSINE

Cooperation for Open Systems Interconnection Networking in
Europe. A EUREKA project.

This article is provided by FOLDOC - Free Online Dictionary of Computing (

**foldoc.org**)## sine

In a right triangle, the ratio of the side opposite an acute angle (less than 90 degrees) and the hypotenuse. The cosine is the ratio between the adjacent side and the hypotenuse. These angular functions are used to compute circular movements.Copyright © 1981-2019 by

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