Definition of cofunction in English:

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cofunction

Pronunciation: /ˈkōˌfəNG(k)SH(ə)n/

noun

Mathematics
The trigonometric function of the complement of an angle or arc.
Example sentences
  • Similarly, tan x and cot x are cofunctions of each other, and sec x and csc x are cofunctions of each other.
  • Students will be able to use reciprocals, quotients, Pythagorean identities, cofunctions, and composite-arguments to prove trig identities.
  • The question wants an angle less than 45º, so we use our cofunctions.

For editors and proofreaders

Syllabification: co·func·tion

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