A flag - staff of 10 meters high stands on a building of 50 meters height.For an observer at a height of 60 meters,the flag - staff and the building subtend equal angles. The distance of the observer from the top of the flag - staff is
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A flag staff of 5m high stands on a building of 25m 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
A5 mB5√3mC5√3/2mDNone of these - Question 1 - Select One
A flag staff of 5m high stands on a building of 25m 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
A5√32B5√32C5√23Dnone of these - Question 1 - Select One
A flag staff of 5m high stands on a building of 25m 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
A5√32B5√32C5√23DNone - Question 1 - Select One
5 m high pole stands on a building of height 25 m. The pole and the building subtend equal angles at an antenna placed at a height of 30 m. The distanceo f the antenna from the top of the pole is
A5√23B5√32C5√32D5√6 - Question 1 - Select One
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
Ay(x2−y2x2+y2)Bx(x2+y2y2−x2)Cx(x2+y2x2−y2)Dx(x2−y2x2+y2) - Question 1 - Select One
A flag is standing vertically on a tower of height b .on a point at a distance a from the foot of tower the flag and the tower subtend equal angles the height of the flag is
Ab.a2+b2a2−b2Ba.a2−b2a2+b2Cb.a2−b2a2+b2Da.a2+b2a2−b2
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