A man observes a car from the top of a tower, which is moving towards the tower with a uniform speed. If the angle of de

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Q 3011723620.     A man observes a car from the top of a tower, which is moving towards the tower with a uniform speed. If the angle of depression of the car changes from 30^o to 45^o in 12 minutes, find the time taken by the car now to reach the tower.

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