Mathematics
A vertical tower stands on a horizontal plane and is surmounted by a vertical flagstaff of height h. At a point on the plane, the angle of elevation of the bottom of the flagstaff is α and that of the top of the flagstaff is β. The height of the tower is : 1. 2. 3. 4.
Related Questions
From the foot of a tower, the angle of elevation of the top of a column is 60° and from the top of the tower, which is 25 m high, the angle of elevation is 30°. The height of the column is:
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An observer standing 72 m away from a building notices that the angles of elevation of the top and the bottom of a flagstaff on the building are respectively 60° and 45°. The height of the flagstaff is:
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Two poles of equal heights are standing opposite to each other on either side of a road, which is 30 m wide. From a point between them on the road, the angles of elevation of the tops are 30° and 60°. The height of each pole is:
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