Question

Identify the value that is equivalent to cos 27°.
A
sin 27°

B
sin 63°

C
cos 63°

D
cos 153°

Answer 1

Answer:

b. sin 63 is the answer

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Answer 2

The required option "B. $\sin 63$" is correct.

Step-by-step explanation:

We have,

$\cos 27$

Identify the value that is equivalent to $\cos 27$ = ?

∴ $\cos 27=\cos (90-63)$

⇒ $\cos 27=\sin 63$

[ ∵ $\sin \theta = \cos (90-\theta)$]

∴  Identify the value that is equivalent to $\cos 63$ is $\sin 63$.

Hence, the required option "B. $\sin 63$" is correct.