1.	Simplify cos x tan x.
		A.	1	B.	csc x
		C.	sin x	D.	cos x
		Hint
	2.	Express as a trigonometric function of an angle in Quadrant I.
		A.		B.
		C.		D.
		Hint
	3.	Simplify the expression sin x + 4 cos x + 2 sin -x - 2 cos -x
		A.	3 sin x + 2 cos x	B.	2 cos x - sin x
		C.	0	D.	1
		Hint
	4.	If sec = 5, find cot .
		A.		B.
		C.		D.
		Hint
	5.	Which of the following is a valid trigonometric identity.
		A.	tan2 + cot2 = sin cos
		B.	tan + cot = sin cos
		C.	tan + cot = sec csc
		D.	Tan2 + cot2 = sec csc
		Hint