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Trigonometry

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Moderate

Cofunction Identity Involving $\cos(\theta)$

TRIG-J4CHSR

Which of the following equations illustrates the Cofunction Identity involving $\cos(\theta)$?

A

$\cos(\theta) = \cos(90 - \theta)$

B

$\cos(\theta) = \sin(90 - \theta)$

C

$\cos(\theta) = \tan(90 - \theta)$

D

$\cos(\theta) = \cot(90 - \theta)$