1.	Which is the graph of y = cos 3?
		A.
		B.
		C.
		D.
		Hint
	2.	Write the equation of the sine function if the amplitude is 5 and the period is 360°.
		A.	y = - sin 5	B.	y = 5 sin
		C.	y = sin 5	D.	y = -5 sin 5
		Hint
	3.	Simplify the expression sin x(1 + cot2x)
		A.	sin x tan x	B.	csc x
		C.	1 + cos2x	D.	sin2x
		Hint
	4.	is equivalent to _____.
		A.	tan2x - 1	B.	sin2x + cos x
		C.	cot2x	D.	2 tan x
		Hint
	5.	Find all solutions of sin 2x = cos x if .
		A.	,	B.	,
		C.	,	D.	,
		Hint
	6.	How is the function y = 3 sin ( +30) shifted?
		A.	shifted 30° to the right	B.	shifted down 30°
		C.	shifted up 30°	D.	shifted 30° to the left
		Hint
	7.	For the function y = cos ( – 50) + 3, what does the number 3 represent?
		A.	amplitude	B.	vertical shift
		C.	period	D.	horizontal shift
		Hint
	8.	Suppose tan = . Which of the following quadrants could contain ?
		A.	second only	B.	first only
		C.	first and third	D.	first and second
		Hint
	9.	Which of the following is not equivalent to the other three?
		A.
		B.
		C.
		D.	2 cot x sec x
		Hint
	10.	Which of the following statements is false?
		A.	sin ( + 360°) = sin
		B.	cos ( + 720°) = –cos
		C.	cos ( – 180°) = –cos
		D.	sin ( + 540°) = –sin
		Hint
	11.	Which expression is equivalent to sin ?
		A.	cos (90° + )	B.	cos ( + 180°)
		C.	–sin (180° – )	D.	cos (270° + )
		Hint
	12.	Find cos if sin x = and x is in the second quadrant.
		A.		B.
		C.		D.
		Hint
	13.	Given that cos = and 0° < < 90°, find cos 2.
		A.		B.
		C.		D.
		Hint
	14.	Solve .
		A.	0°, 90°, 180°, 270°	B.	90°, 270°
		C.	0°, 180°	D.	0°, 90°, 270°
		Hint