A person observed the angle of elevation of the top of a tower as `30^@` . He walked 50m towards the foot of the tower along level ground and found the angle of elevation of the top of the tower as `60^@` . Find the height of the tower.

A T.V. Tower stands vertically on a bank of a river. From a point on the other bank directly opposite to the tower, the angle of elevation of the top of the tower is 60 degrees. From a point 20m away this point on the same bank, the angle of elevation of the top of the tower is 30o . Find the height of the tower and the width of the river.

The angle of elevation of the top of a tower from a certain point is 30^o . If the observer moves 20 m towards the tower, the angle of elevation of the top of the tower increases by 15^o . Then height of the tower is

A 20 m high vertical pole and a vertical tower are on the same level ground in such a way that the angle of elevation of the top of the tower, as seen from the foot of the pole, is 60^(@) and the angle of elevation of the top of the pole as seen from the foot of the tower is 30^(@) . Find : the height of the tower.

A boy, 1.6 m tall, is 20 m away from a tower and observes the angle of elevation of the top of the tower to be 60^(@) . Find the height of the tower in each case

A man observes the angle of elevation of the top of the tower to be 45^(@) . He walks towards it in a horizontal line through its base. On covering 20 m the angle of elevation change to 60^(@) . Find the height of the tower correct to 2 significant figures.

An observer finds that the elevation of the top of a tower is 22.5^@ and after walking100 m towards the foot of the tower, he finds that the elevation of the top has increased to 67.5^@. The height of the tower in metres is:

The angle of elevation of the top of a tower from a point 40 m away from its foot is 60^(@) . Find the height of the tower.

From the top of a building 15m high the angle of elevation of the top of tower is found to be 30^@ . From the bottom of same building ; the angle of elevation of the top of the tower is found to be 60^@ . Find the height of the tower and the distance between tower and building .

From a point on the ground, 20m away from the foot of a vertical tower, the angle of elevation of the top of the tower is 60^@ , what is the length 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.