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A tower of x metres height has flag staf...

A tower of x metres height has flag staff at its top. The tower and the flag staff subtend equal angles at a point distant y metres from the foot of the tower. Then, the length of the flag staff in metres is

A

`y((x^2-y^2)/(x^2+y^2))`

B

`x((x^2+y^2)/(y^2-x^2))`

C

`x((x^2+y^2)/(x^2-y^2))`

D

`x((x^2-y^2)/(x^2+y^2))`

Text Solution

Verified by Experts

The correct Answer is:
B
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OBJECTIVE RD SHARMA ENGLISH-HEIGHTS AND DISTANCES-Exercise
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  14. The angle of depression of a point situated at a distance of 70 metres...

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