1.	The angle of depression from the top of one building to the top of a neighboring building is 12°. If the buildings are 50 feet apart, what is the difference between the heights of the buildings? Round your answer to the nearest tenth of a foot.
		A.	48.9 ft	B.	10.4 ft
		C.	235.2 ft	D.	10.6 ft
		Hint
	2.	is an acute angle of a right triangle. If sin find cos and tan .
		A.	cos and tan	B.	cos and tan
		C.	cos and tan	D.	cos and tan
		Hint
	3.	Solve . Round measures of sides to the nearest tenth and measures of angles to the nearest degree.
		A.	E = 64°, d = 12.9, e = 11.4
		B.	E = 64°, d = 14.4, e = 12.9
		C.	E = 64°, d = 11.7 e = 14.4
		D.	E = 64°, d = 12.9, e = 14.4
		Hint
	4.	State the amplitude and the period for y = 2 cos .
		A.	amplitude = 2, period = 4	B.	amplitude = -2, period = 180°
		C.	amplitude = 2 , period =	D.	amplitude = -2, period = 4
		Hint
	5.	Find the value of sin 87° to the nearest thousandth.
		A.	-0.822	B.	0.999
		C.	19.08	D.	0.052
		Hint
	6.	In baseball, a pop fly should be easily caught if it stays in the air for 7 seconds. Suppose a ball that is hit can be represented by the function y = –16t2 + 125t + 5, where y is the height after t seconds. Will the ball be considered an easy catch?
		A.	yes, because t < 7	B.	no, because t < 7
		C.	yes, because t > 7	D.	no, because t > 7
		Hint
	7.	John wanted to see the flag as he sang the national anthem, so he looked up at it at an angle of 38°. Then, he decided to get a closer look, so he walked 150 feet toward the flag. If his angle of elevation was now 46°, how high was the flag?
		A.	117.2 ft.	B.	155.3 ft.
		C.	460.9 ft.	D.	477.3 ft.
		Hint
	8.	Find sin 330° by drawing a reference angle.
		A.		B.	1
		C.		D.
		Hint
	9.	Find sin 450° by drawing a reference angle.
		A.		B.
		C.		D.	1
		Hint
	10.	What is the period for the graph
		A.	180°	B.	45°
		C.	720°	D.	360°
		Hint