Question

Using the cosine sum identity, Cosine (x + StartFraction 3 pi Over 2 EndFraction) = cosine (x) cosine (StartFraction 3 pi Over 2 EndFraction) minus sine (x) sine (StartFraction 3 pi Over 2 EndFraction)

Which of the following is equivalent to Cosine (x + StartFraction 3 pi Over 2 EndFraction)?

Answer 1

A

Step-by-step explanation:

Answer 2

Answer: A. Sin(x)

Step-by-step explanation:

Just did it and got it correct. Yw:)