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# trigonometric function

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noun Mathematics.
1. Also called circular function. a function of an angle, as sine or cosine, expressed as the ratio of the sides of a right triangle.
2. any function involving only trigonometric functions and constants.
3. the generalization of these to functions of real or complex numbers.

## Origin of .css-1fxfie5{font-size:22px;}@media (max-width:768px){.css-1fxfie5{font-size:18px;margin:0 10px 10px 0;word-break:break-all;word-wrap:break-word;-webkit-hyphens:auto;-moz-hyphens:auto;-ms-hyphens:auto;hyphens:auto;line-height:22px;}}trigonometric function

First recorded in 1905–10
Also called trig function (for defs 1, 2).
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for trig function

# trigonometric function

noun
1. Also called: circular function any of a group of functions of an angle expressed as a ratio of two of the sides of a right-angled triangle containing the angle. The group includes sine, cosine, tangent, secant, cosecant, and cotangent
2. any function containing only sines, cosines, etc, and constants