Mathematics · Heights and Distances
An aeroplane is flying horizontally at a constant height of 600 m above the ground. At a particular instant, its angle of elevation from a point on the ground is 60°. After 10 seconds, the angle of elevation from the same point becomes 30°. Find the speed of the aeroplane.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 140√3 m/s
- 240√3 m/s
- 380√3 m/s
- 480√3 m/s✓
Correct answer
80√3 m/s
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