Draw the pictures presented by the information in the problems given. Assume the buildings, ladders, etc. are all on level ground.
1. The angle of elevation of the top of the building from a point 30 meters away from the building is 65°.
2. The angle of depression of a boy from a point on a lighthouse 30.5 meters above the surface of the water is 3°.
3. If an airplane that is cruising at an altitude of 9 km wants to land at NAIA, it must begin its descent so that the angle of depression to the airport is 7°.
4. A bird sits on top of a 5-meter lamp post. The angle of depression from the bird to the feet of an observer standing away from the lamp post is 35°.
5. Two points on the same side of a tree are 19.8 meters apart. The angles of elevation of the top of the tree are 21° from one point and 16° from the other point.
1.
__________
| /
| /
| /
building| /
| /
| /
Point
2.
Boy
|
|
|
|
|
|
|\
| \
| \
| Lighthouse
3.
Airplane
/
/ 7°
/
/ NAIA
4.
Bird
/
/
/ 35°
/
/
/ Observer
5.
Tree
| /
|/
/|\
/ | \
/ | \
A T B
(21°) (16°)