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| 1. |
Q: The angle of elevation of the top of a tower from a point A on the ground is 30o. On moving a distance of 20 m towards the foot of the tower to a point B, the angle of elevation increase to 60o.The height of the tower is- |
| A. | 5√3 |
| B. | 15 |
| C. | 10√3 |
| D. | 20√3 |
| Answer» D. 20√3 | |