Question
The angles of depression of the top and the bottom of a building 50 m high as observed from the top of a tower are 30° and 60° respectively. Find the height of the tower and also the horizontal distance between the building and the tower.
OR
The angle of elevation of the top of a tower as observed from a point on the ground is d and on moving α metres towards the tower the angle of elevation is β prove that the
height of the tower is 
.
Solution
75 m., 43.25 m.
