Cofunction definition

kōfŭngkshən
The trigonometric function of the complement of an angle.

The tangent is the cofunction of the cotangent.

noun
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The trigonometric function of the complement of an angle. The tangent, for example, is the cofunction of the cotangent.
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(mathematics) The trigonometric function of the complement of the supplied angle (thus cosine and sine are each other's cofunctions)
noun
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Other Word Forms

Noun

Singular:
cofunction
Plural:
cofunctions