Question

A boy at top of a vertical obs
ervation tower observes a car moving at uniform speed coming directly towards the tower. If it takes 10 minutes for angle of depression to change from 30degree to 60 degree, how much after this will the car reach the observation tower
i want full calculation​

Answer 1

Answer:

A man on top of a vertical tower observes a car moving at a uniform speed coming directly towards it. If it takes 12 mins for the angle of depression to change from 30 degree to 45 degree.