ConceptHeights and Distances

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#### Question

A straight highway leads to the foot of a tower. A man standing at the top of the tower observes a car as an angle of depression of 30°, which is approaching the foot of the tower with a uniform speed. Six seconds later, the angle of depression of the car is found to be 60°. Find the time taken by the car to reach the foot of the tower from this point.

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#### Reference Material

Solution for concept: Heights and Distances. For the course 8th-10th CBSE