# trigonometric function

### noun Mathematics.

Also called circular function. a function of an angle, as sine or cosine, expressed as the ratio of the sides of a right triangle.

any function involving only trigonometric functions and constants.

the generalization of these to functions of real or complex numbers.

## Origin of trigonometric function

First recorded in 1905–10

Also called trig function (for defs 1, 2).

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## trigonometric function

### noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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## trigonometric function

[trĭg′ə-nə-mĕt′rĭk]

The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.