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Mahesh Sandeboina

· started a discussion

· 1 Months ago

very good question (Question: 115777.0 )

keep giving these type of questions

Question:
A round balloon of radius r subtends an angle \(\alpha\) at the eye of an observer, while the angle of elevation of its centre is \(\beta\). The height of the centre of the balloon is given by :
Options:
A) \(r\ sin\cfrac{\alpha}{2}cosec\ \beta\)
B) \(r\ cosec\cfrac{\alpha}{2}cos\ \beta\)
C) \(r\ cos\cfrac{\alpha}{2}cosec\ \beta\)
D) \(r\ cosec\cfrac{\alpha}{2}sin\ \beta\)
Solution:
Ans: (d)



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