Question

15 A straight highway leads to the foot of a tower.
A man standing at the top of the tower observes
a car at 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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Answer 1

Answer:

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