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| 1. |
A boat is moving away from an observation tower. It makes an angle of depression of 60° with an observer's eye when at a distance of 50m from thetower. After 8 sec., the angle of depression becomes 30°. By assuming that it is running in still water, the approximate speed of the boat is1).33km/hr2). 42km/hr3). 45km/hr4). 50km/hr |
| Answer» CORRECT ANSWER is: 45km/hr | |