- A3 minutes
- B6 minutes
- C2 minutes
- D12 minutes
Step-by-Step Solution
With height : distances and . Covered in 6 min; the remaining is half of that: 3 min.
Answer: A) 3 minutes
A man on top of a tower watches a car moving straight towards the tower. The angle of depression of the car changes from 30° to 60° in 6 minutes. How much longer will the car take to reach the foot of the tower?
Competition practiceTrigonometry
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Trigonometry practice questions
More Trigonometry practice
From a point 60 m above a still lake, the angle of elevation of a cloud is 30° and the…A 1.6 m tall statue stands on a pedestal. From a point on the ground, the angle of…A ladder placed in a street at 60° to the ground just reaches a window 6√3 m high on one…A sailor on the deck of a ship, 10 m above the water, sees the top of a hill at an…An aeroplane at a height of 3000 m passes vertically above another aeroplane. At that…