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cofunction

[koh-fuhngk-shuh n]
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noun Trigonometry.
  1. the function of the complement of a given angle or arc: cosθ is the cofunction of sinθ.

Origin of cofunction

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

cofunction

[kōfŭngk′shən]
  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.

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