1.	Simplify sin .
		A.	sin x + cos2x	B.	tan x
		C.	2 sin x	D.	2 cos x
		Hint
	2.	is equivalent to _____.
		A.	tan2x - 1	B.	cot2x
		C.	sin2x + cos x	D.	2 tan x
		Hint
	3.	Which expression is equivalent to csc x – sin x?
		A.	sin x + cos x	B.	cos2x + sin2x
		C.		D.	sin x – cos x
		Hint
	4.	How many periods will the function y = 2sincontain in 9 radians?
		A.		B.	3
		C.	27	D.
		Hint
	5.	Which function will have the most periods in 2 radians?
		A.	y = 4sin(4)	B.	y = 2sin
		C.	y = 3sin (5)	D.	y = 5sin
		Hint
	6.	How is the function y = 3 cos ( +20) – 4 shifted?
		A.	shifted 4 units up and 20° to the right
		B.	shifted 4 units up and 20° to the left
		C.	shifted 4 units down and 20° to the left
		D.	shifted 4 units down and 20° to the right
		Hint
	7.	Which of the following is an example of a function with a phase shift?
		A.	y = 5 sin	B.	y = 1 + 3 cos
		C.	y = 2 sin ( – 15)	D.	y = 3 + cos
		Hint
	8.	Find tan if cos = and 0° < < 90°
		A.		B.	8
		C.		D.
		Hint
	9.	Find the exact value of sin (–75°).
		A.		B.
		C.		D.
		Hint
	10.	Find the exact value of cos (480°).
		A.		B.
		C.		D.
		Hint
	11.	Suppose sin = and sin 2 = . In which quadrant(s) could this be?
		A.	first and second	B.	first or fourth
		C.	second only	D.	first only
		Hint
	12.	Given that cos = and 0° < < 90°, find cos 2.
		A.		B.
		C.		D.
		Hint
	13.	Solve 2 cos 2 = 1.
		A.	30°, 150°	B.	150°, 210°
		C.	30°, 150°, 210°, 330°	D.	30°, 330°
		Hint
	14.	Solve 5 cos 2 + 4 cos – 12 = 0.
		A.	34°, 326°	B.	no solution
		C.	34°, 146°, 214°, 326°	D.	146°, 214°
		Hint