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Meaning of trigonometric function

trig'onomet'ric func'tion

Pronunciation: [key]
— Math. Math.
  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. Also called trig function
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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