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1. |
The angle of elevation of the top of a vertical tower situated perpendicularly on a plane is observed as 60 from a point P on the same plane. From another point Q, 10 m vertically above the point P, the angle of depression of the foot of the tower is 30 . The height of the tower is |
A. | 15 m |
B. | 30 m |
C. | 20 m |
D. | 25 m |
Answer» C. 20 m | |