CBSE Class 10 Maths (Standard) 2023 · Paper 30/1/1 · Question 33(b)
A spherical balloon of radius subtends an angle of at the eye of an observer. If the angle of elevation of its centre is from the same point, then prove that height of the centre of the balloon is times its radius.
Answer
The height of the centre is , i.e. times the radius, as required.
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