A man is watching from the top of a tower a boat speeding away from the tower. The boat makes an angle of depression of 45° with the man's eye when at a distance of 50 m from the tower. After 1 second, the angle of depression becomes 30°. What is the approximate speed of the boat?
Q1. A man is watching from the top of a tower a boat speeding away from the tower. The boat makes an angle of depression of 45° with the man's eye when at a distance of 50 m from the tower. After 1 second, the angle of depression becomes 30°. What is the approximate speed of the boat?
Answer: 68.2 km/h
Explanation: First, find the distance traveled by the boat using trigonometric relations. Then, calculate the speed.