co·​func·​tion ˈkō-ˌfəŋ(k)-shən How to pronounce cofunction (audio)
: a trigonometric function whose value for the complement of an angle is equal to the value of a given trigonometric function of the angle itself
the sine is the cofunction of the cosine

Word History

First Known Use

1909, in the meaning defined above

Time Traveler
The first known use of cofunction was in 1909

Dictionary Entries Near cofunction

Cite this Entry

“Cofunction.” Dictionary, Merriam-Webster, Accessed 26 Feb. 2024.

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