The upper part of a lamp-post is broken by strom and the top touches the ground at an angle of `30^@` and at a distance of `8sqrt3` meter from the foot of the post. What was the height of the post.

Some portion of a 20 meters long tree is broken by the wind and its top struck the ground at an angle of 30 ^@ .Find the height of the point where the tree is broken.

A boy observed the top of an electric pole at an angle of elevation of 60^(@) when the observation point is 8 meters away from the foot of the pole. Find the height of the pole.

A telegraph post is bent at a point above the ground due to storm. Its top just meets the ground at a distance of 8sqrt3 metres from its foot and makes an angle of 30^@ . Calculate at what heigh the post is bent and what is the height of the post.

A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground by making 30^(@) angle with the ground. The distance between the foot of the tree and the top of the tree on the ground is 8 m. Find the height of the tree before falling down.

A man, standing on the bank of a river observes that the angle of elevation of the top of a tree just on the opposite bank is 60^@ But the angle off elevations is 30^@ from a point at a distance y metres from the bank. Show that the height of tree h= sqrt(3y)/2.

The height of the mobile tower is 40sqrt3 metre. The angle of elevation of the top of the tower from a point a distance 120 metre from the foot of the tower is

Height of a tower is 100sqrt(3) metres. The angle to elevation of the top the tower from a point at a distance of 100 metres of foot of the tower is

The upper 3/4 th portion of a vertical pole subtends an angle theta such that tan theta=3/5 at a point in the horizontal plane through its foot and at a distance 40m from the foot. Find the possible height of the vertical pole.

A man is moving away from a tower 41.6 m high at the rate of 2 m/sec. Find the rate at which the angle of elevation of the top of tower is changing, when he is at a distance of 30m from the foot of the tower. Assume that the eye level of the man is 1.6m from the ground.