1.	State the amplitude and the period for y = 2 cos .
		A.	amplitude = -2, period = 4	B.	amplitude = 2, period = 4
		C.	amplitude = 2 , period =	D.	amplitude = -2, period = 180°
		Hint
	2.	Which is the graph of y = cos 3?
		A.
		B.
		C.
		D.
		Hint
	3.	Find tan if 90° < < 180°, and csc .
		A.		B.
		C.		D.
		Hint
	4.	Rewrite (sin2 x + cos2 x) ÷ tan x as an expression involving only cot x.
		A.	cot2x	B.	cot x
		C.	2 cot x	D.	1 – cot x
		Hint
	5.	Which expression is equivalent to csc x – sin x?
		A.	sin x + cos x	B.	sin x – cos x
		C.		D.	cos2x + sin2x
		Hint
	6.	Find the exact value of sin 225°.
		A.		B.
		C.	0	D.
		Hint
	7.	Find the exact value of sin 75°.
		A.		B.
		C.		D.
		Hint
	8.	Find the solution for 2 cos x =1 where .
		A.		B.
		C.		D.
		Hint
	9.	Solve 2 sin2 x – sin x = 1 for .
		A.		B.
		C.		D.
		Hint
	10.	A runner's pace oscillates during a race between 9 mph and 13 mph. For a one-hour race, this person's pace oscillates 20 times. What is a sine function that represents this situation?
		A.	y = 2 sin + 11	B.	y = 2 sin + 9
		C.	y = 4 sin + 11	D.	y = 4 sin + 9
		Hint
	11.	Suppose that we want to shift the function y = 3 + sin [2( –45)] up 2 units. What would its equation be?
		A.	y = 5 + sin [2( –45)]	B.	y = 1 + sin [2( –45)]
		C.	y = 3 + sin [4( –45)]	D.	y = 5 + sin [4( –45)]
		Hint
	12.	Find tan if cos = and 0° < < 90°
		A.	8	B.
		C.		D.
		Hint
	13.	Suppose sin = and sin 2 = . In which quadrant(s) could this be?
		A.	first only	B.	first or fourth
		C.	second only	D.	first and second
		Hint
	14.	Find cos if sin x = and x is in the second quadrant.
		A.		B.
		C.		D.
		Hint