Angle A is the complement of angle B.

Which equation about the two angles must be true?

A) cos B = sin B

B) sin A = sin B

C) cos A = sin B

D) sin A = cos A

Question

8 October, 14:11

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Answers (1)

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Deangelo Cabrera · Answer 1

C) cos A=sin B

Step-by-step explanation:

A is complement of B: A+B=90⁰

Sin (A) = sin (90-B) = cos (B)

Cos (A) = cos (90-B) = sin (B)

So c)

Angle A is the complement of angle B. Which equation about the two angles must be true?A) cos B = sin BB) sin A = sin BC) cos A = sin BD) sin A = cos A