A flag-staff of 5 m high stands on a building of 25 m high. At an observer at a height of 30 m. The flag-staff and the building subtend equal angles. The distance of the observer from the top of the flag-staff is [EAMCET 1993]

A flag-staff of 5 m high stands on a building of 25 m high. At an obse

1.	A flag-staff of 5 m high stands on a building of 25 m high. At an observer at a height of 30 m. The flag-staff and the building subtend equal angles. The distance of the observer from the top of the flag-staff is [EAMCET 1993]
A.	\[\frac{5\sqrt{3}}{2}\]
B.	\[5\sqrt{\frac{3}{2}}\]
C.	\[5\sqrt{\frac{2}{3}}\]
D.	None of these
Answer» C. \[5\sqrt{\frac{2}{3}}\]

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A flag-staff of 5 m high stands on a building of 25 m high. At an observer at a height of 30 m. The flag-staff and the building subtend equal angles. The distance of the observer from the top of the flag-staff is [EAMCET 1993]

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