Question

A round balloon of radius r subtends an angle a at the eye of the observer while the angle of elevation of its centre is B. Prove that the height of the centre of the balloon is
$\sf{( r \sin \beta \cosec \frac{ \alpha }{2} )}$
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Answer 1

Answer:

Question

A round balloon of radius r subtends an angle a at the eye of the observer while the angle of elevation of its centre is B. Prove that the height of the centre of the balloon is

$\sf{( r \sin \beta \cosec \frac{ \alpha }{2} )}$

Answer is Attached below.