1.	If sin = and has its terminal side in the first quadrant, find the exact value of sin 2.
		A.		B.
		C.		D.
		Hint
	2.	If sin = and has its terminal side in the first quadrant, find the exact value of cos 2.
		A.		B.
		C.	1	D.
		Hint
	3.	Complete the identity = ________.
		A.	cos x	B.	sin x
		C.	tan x	D.	cot x
		Hint
	4.	If cos = and has its terminal side in the first quadrant, find the exact value of cos .
		A.	-	B.
		C.		D.	-
		Hint
	5.	If sin = , find cos 2.
		A.	-	B.
		C.		D.	-
		Hint