
	1.	Determine the exact value of cos, given sin and 0° < < 90°
		A.		B.
		C.		D.
		Hint

	2.	Express cot (-840°) as a trigonometric function of an angle in Quadrant I.
		A.	- tan 60°	B.	cot 60°
		C.	tan 60°	D.	- cot 60°
		Hint

	3.	Which identity is not a Pythagorean identity?
		A.	tan² + 1 = sec²	B.
		C.	1 + cot² = csc²	D.	sin² + cos² = 1
		Hint

	4.	Simplify the expression sin x + 4 cos x + 2 sin -x - 2 cos -x
		A.	3 sin x + 2 cos x	B.	0
		C.	1	D.	2 cos x - sin x
		Hint

	5.	If sec = 5, find cot .
		A.		B.
		C.		D.
		Hint