1.	State the amplitude and the period for y = 2 cos .
		A.	amplitude = 2 , period =	B.	amplitude = -2, period = 180°
		C.	amplitude = 2, period = 4	D.	amplitude = -2, period = 4
		Hint
	2.	Graph y = .
		A.		B.
		C.		D.
		Hint
	3.	Simplify the expression sin x(1 + cot2x)
		A.	sin2x	B.	1 + cos2x
		C.	csc x	D.	sin x tan x
		Hint
	4.	Rewrite (sin2 x + cos2 x) ÷ tan x as an expression involving only cot x.
		A.	1 – cot x	B.	2 cot x
		C.	cot2x	D.	cot x
		Hint
	5.	Which expression is equivalent to csc x – sin x?
		A.	sin x + cos x	B.
		C.	sin x – cos x	D.	cos2x + sin2x
		Hint
	6.	Find the exact value of sin 225°.
		A.		B.	0
		C.		D.
		Hint
	7.	What is the exact value of cos (-60°)?
		A.		B.	0
		C.		D.	-1
		Hint
	8.	What is the exact value of cos 2x if cos x = and x is in quadrant II?
		A.		B.
		C.		D.
		Hint
	9.	2 cot x sin2x is equivalent to ________.
		A.	cos2x + sin x	B.	1 + sin2x
		C.	cos	D.	sin 2x
		Hint
	10.	How is the function y = 3 cos ( +20) – 4 shifted?
		A.	shifted 4 units up and 20° to the left
		B.	shifted 4 units up and 20° to the right
		C.	shifted 4 units down and 20° to the right
		D.	shifted 4 units down and 20° to the left
		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 = 3 + sin [4( –45)]	B.	y = 5 + sin [2( –45)]
		C.	y = 1 + sin [2( –45)]	D.	y = 5 + sin [4( –45)]
		Hint
	12.	Suppose tan = . Which of the following quadrants could contain ?
		A.	second only	B.	first only
		C.	first and third	D.	first and second
		Hint
	13.	Solve cos = 3 cos – 1.
		A.	60°, 300°	B.	30°, 330°
		C.	60°, 120°	D.	30°, 150°
		Hint
	14.	Solve .
		A.	0°, 90°, 180°, 270°	B.	0°, 90°, 270°
		C.	0°, 180°	D.	90°, 270°
		Hint