- A90 m
- B120 m
- C180 m
- D60√3 m
Step-by-Step Solution
With horizontal distance . Dividing: , so m.
Answer: B) 120 m
From a point 60 m above a still lake, the angle of elevation of a cloud is 30° and the angle of depression of its reflection in the lake is 60°. How high is the cloud above the lake?
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
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…Work out the sum sin²5° + sin²10° + sin²15° + … + sin²90°.