A man on the top of a tower observes a car moving towards it. The angle of depression changes from 30° to 60° in 20 s. What is the time taken by the car to reach the tower?
Q1. A man on the top of a tower observes a car moving towards it. The angle of depression changes from 30° to 60° in 20 s. What is the time taken by the car to reach the tower?
Answer: 10 s
Explanation: Using trigonometric relations, we can calculate the distance traveled by the car in 20 s and then find the remaining time to reach the tower.