MA 15900 EXAM 3 SPRING 2012
1
1. A builder wishes to construct a ramp that is 32 feet long. One end of the ramp will sit on the level
ground and the other end will be 7 feet above the level ground. Approximate the acute angle
between the ramp and the level ground to one decimal place.
1)
14.7°
2)
14.4°
3)
14.1°
4)
13.8°
5)
13.5°
6)
13.2°
7)
12.9°
8)
12.6°
9)
12.3°
2. If the angle
θ
is in standard position, which of the following is a pair of angles that are both
coterminal to
θ
?
θ
=580°
1)
760°, 400°
2)
40°, 760°
3)
−140°, 400°
4)
−140°, 760°
5)
940°,−320°
6)
−320°, 400°
7)
−320°, 760°
8)
220°,−320°
9)
220°, 940°
3. Find the zeros of f.
f(x)=x2e−3x+xe−3x−30e−3x
1)
−30,−6,5
2)
−6,0,5
3)
−6,1,5
4)
−30,0
5)
−30,1
6)
−30
7)
0
8)
1
9) None of the above
