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 na altitude of 9 km wants to land of 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 in the same side of a tree are 19.8 meters apart. The angle of elevation of the top of the tree are 21° from one point and 16° from the other point.


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