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cofunction

American  
[koh-fuhngk-shuhn] / ˈkoʊˌfʌŋk ʃən /

noun

Trigonometry.

  1. the function of the complement of a given angle or arc.

    cosθ is the cofunction of sinθ.
cofunction Scientific  
/ kō′fŭngk′shən /

  1. The trigonometric function of the complement of an angle. The tangent, for example, is the cofunction of the cotangent.

Etymology

Origin of cofunction

First recorded in 1905–10; co- + function

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.