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1. |
A tower standing on a horizontal plane subtends a certain angle at a point 160 cm a part from the foot of the tower. On advancing 100 meter towards the tower is found to subtend an angle twice as before. The height of tower is__ |
A. | 60 cm |
B. | 80 cm |
C. | 40 cm |
D. | 100 cm |
Answer» C. 40 cm | |