2. February 8, 2012
Ex. 1) Two observers 2.32 miles apart see a hot-air
balloon directly between them. Observer A spots it at a
28o angle of elevation and Observer B spots it at a 37o
angle of elevation. What is the altitude of the balloon?
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3. February 8, 2012
Ex. 2) A vertical flagpole stands on a road that slopes at an
angle of 15o with the horizontal. When the angle of
elevation of the sun is 62o, the flagpole casts a 16-ft
shadow downhill along the road. Find the height of the
flagpole.
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4. February 8, 2012
Ex. 3) A ship travels 40 miles due east and then changes
to a northward direction. When the ship has traveled 30
miles at this heading, it is 56 miles from its point of
departure. Find the bearing from its point of departure
and when it changed course.
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5. February 8, 2012
Ex. 4) Two ships leave port at 9 am. One travels at a
bearing of N 53o W at 12 mph, while the other travels at a
bearing of S 67o W at 16 mph. How far apart will the ships
be at noon?
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