1.	Simplify cos x + cos x tan2 x.
		A.	tan x	B.	sec x
		C.	csc x	D.	1 + tan x
		Hint
	2.	Express as a trigonometric function of an angle in Quadrant I.
		A.		B.
		C.		D.
		Hint
	3.	Determine the exact value of cos, given sin and 0° < < 90°
		A.		B.
		C.		D.
		Hint
	4.	Express cot (-840°) as a trigonometric function of an angle in Quadrant I.
		A.	- cot 60°	B.	- tan 60°
		C.	cot 60°	D.	tan 60°
		Hint
	5.	Which of the following is a valid trigonometric identity.
		A.	tan + cot = sec csc
		B.	tan + cot = sin cos
		C.	tan2 + cot2 = sin cos
		D.	Tan2 + cot2 = sec csc
		Hint