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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

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The correct Answer is:
`(b(a^(2)+b^(2)))/(a^(2)-b^(2))`
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ML KHANNA-HEIGHTS AND DISTANCES-Problem Set (1) FILL IN THE BLANKS
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