The angle of elevation of the top of a tower from a certain point is `30^@`. If the observer moves 20 metres towards the tower, the angle of elevation of the top increases by `15^@`. Find the height of the tower.

The angle of elevation of the top of a tower from a certain point is 30o . If the observer moves 20 m towards the tower, the angle of elevation of the top of the tower increases by 15o . The height of the tower is (a) 17.3 m (b) 21.9 m (c) 27.3 m (d) 30 m

The angle of elevation of the top of a tower at any point on the ground is 30^@ and moving 20 metres towards the tower it becomes 60^@ . The height of the tower is

The angle of elevation of the top of a tower at a point A on the ground is 30^(@) . On walking 20 meters toward the tower, the angle of elevation is 60^(@) . Find the height of the tower and its distance from A.

The angle of elevation of the top of a tower from a point on the ground is 30^(@) . After walking 40sqrt3 m towards the tower, the angle of elevation becomes 60^(@) . Find the height of the tower.

The angle of elevation of the top of a tower from a point on the ground is 30^(@) . After walking 45 m towards the tower, the angle of elevation becomes 45^(@) . Find the height of the tower.

The angle of elevation of a tower at a point is 45^(@) . After going 40 m towards the foot of the tower, the angle of elevation of the tower becomes 60^(@) . Find the height of the tower.

The angle of elevation of the top of a tower as observed from a point on the ground is a and on moving 'a' metres towards the tower, the angle of elevation is beta . Prove that the height of the tower is (a tanalphatanbeta)/(tanbeta-tanalpha) .

Problems of finding the height of tower if angle of elevation is changing on walking away/towards the tower.ex-1The angle of the elevation of the top of the tower at a point on the ground is 30^(0). On walking 24m towards the tower the angle of elevation changes from 60^(0). Find the height of the tower.