Definition of cofunction in English:

Share this entry


Pronunciation: /ˈkōˌfəNG(k)SH(ə)n/


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.
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.