1.	Use the sum or difference identity for sine to find the exact value of sin 375°.
		A.		B.
		C.		D.
		Hint
	2.	Use the sum or difference identity for tangent to find the exact value of tan 255°.
		A.		B.
		C.		D.
		Hint
	3.	Complete the identity ______________.
		A.	sin A	B.	-cos A
		C.	-sin A	D.	cos A
		Hint
	4.	Find the value of cos (x - y) if 0 < x < , 0 < y < , sin x = , and cos y = .
		A.		B.
		C.		D.
		Hint
	5.	Complete the identity tan ( - A) = ________.
		A.	-cot A	B.	tan A
		C.	-tan A	D.	cot A
		Hint