An object is observed from three points A, B, C in the same horizontal line passing through the base of the object. The angle of elevation at B is twice and at C thrice that at A. If `AB=a, BC=b` prove that the height of the object is `a/(2b)sqrt((a+b)(3b-a))`

An object is observed from three points A, B,C in the same horizontal line passing through the base of the object. The angle of elevation at B is twice and at C is thrice than that at A. If AB=a, BC=b prove that the height of the object is h=(a/(2b))sqrt((a+b)(3b-a))

A ballon is observed simultaneously from the 3 points A,B,C on a staight road dirctly beneath it. The angles elevation at B is twice that at A and the angular elevation on at C is thrice that at A. If AB = 20, BC = 40 then the height of the ballon is

A balloon is observed simultaneously from three points A, B and C on a straight road directly under it. The angular elevation at B is twice and at C is thrice that at A . If the distance between A and B is 200 metres and the distance between B and C is 100 metres, then find the height of balloon above the road.

A balloon is observed simultaneously from three points A, B and C on a straight road directly under it. The angular elevation at B is twice and at C is thrice that at A . If the distance between A and B is 200 metres and the distance between B and C is 100 metres, then find the height of balloon above the road.

A balloon is observed simultaneously from three points A, B and C on a straight road directly under it. The angular elevation at B is twice and at C is thrice that at A . If the distance between A and B is 200 metres and the distance between B and C is 100 metres, then find the height of balloon above the road.

The angle of elevation of an object on a hill is observed from a certain point in the horizontal plane through its base, to be 30^(@) . After walking 120 m towards it on a level groud, the angle of elevation is found to be 60^(@) . Then the height of the object (in metres) is

The angle of elevation of an object on a hill is observed from a certain point in the horizontal plane through its base, to be 30^(@) . After walking 120 m towards it on a level groud, the angle of elevation is found to be 60^(@) . Then the height of the object (in metres) is