1.	Use the sum or difference identity for sine to find the exact value of sin 375°.
		A.		B.
		C.		D.
		Hint
	2.	Find the value of sin (x + y) if , sin x = , and sin y = .
		A.		B.
		C.		D.
		Hint
	3.	Complete the identity ______________.
		A.	-sin A	B.	sin A
		C.	cos A	D.	-cos A
		Hint
	4.	Use the sum or difference identity for cosine to find the exact value of cos 105°
		A.		B.
		C.		D.
		Hint
	5.	Find the value of cos (x - y) if 0 < x < , 0 < y < , sin x = , and cos y = .
		A.		B.
		C.		D.
		Hint