Trigonometry - Angles of elevation & depression.
Test Yourself 1.
Angles of elevation. | |
5. | |
Angle of depression. | 6. |
10. | |
Both types. | 11. The diagram below shows a satellite dish S sitting on a foundation TB. The top of the dish is above the right side of the foundation.
The distance from point P to the foundation is 15 m. The distance from P to the top of the dish is 25 m. Answer.(i) Angle of elevation is 53°. (ii) Height TB = 8 m. |
Near my house is a fence between two brick pillars. It is behind a lovely bush and has a small fish pond in front.
The main points and the measurements are marked on the picture below. The tops of the pillars are marked F and G. The bottom of the pillars are at A and B. FA and GD are perpendicular. The top of the fence is ED and the bottom of the fence is AB. ED is parallel to AC and both are horizontal. AF = 165 cm with the top part EF = 37 cm. Answer.(i) EFD = 81°43' ∴ Angle of depress = 8°7'. (iv) Angle of depression = 13° 5'. (v) No - different angles of depression. (vi) Area = 4 m2 | |