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CGP EDU Academic Team
Published on: August 13, 2026
A round ballon of radius r subtends an angle α at the eye of the observer, while the angle of elevation of its centre is β . The height of the centre of ballon is-
Text Solution
Verified by ExpertsThe correct answer is:
D
Let height of centre of balloon is OA = h and P is eye of observer men h = OP sin β
OP = r cosec 
∴ h = r sin β cosec 
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