A straight highway leads to the foot of a tower. A man standing at the top of the tower observes
Channel: Doubtnut
Date: 2020-07-05

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.