[koh-fuhngk-shuh n]
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Origin of cofunction

First recorded in 1905–10; co- + function Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

cofunction in Science


  1. The trigonometric function of the complement of an angle. The tangent, for example, is the cofunction of the cotangent.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.