There is a small island in the middle of a 100m wide river and a tall tree stands on the island. `P` and `Q` are points directly opposite to each other on two banks and in line with the tree. If the angles of elevation of the top of the tree from `P` and `Q` are respectively `30o` and `45o` , find the height of the tree.

There is a small island in the middle of a 50m wide river and a tall tree stands on the island.P and Q are points directly opposite to each other on the two banks, and in line with the tree. If the angles of elevations of the top of the tree from P and Q are respectively 60^(@) and 30^(@) ,find the height of the tree.

The angles of elevation of the top of a rock from the top and foot of a 100m high tower are respectively 30o and 45o. Find the height of the rock.

A man sitting at a height of 20m on a tall tree on a small island in the middle of a river observes two poles directly opposite to each other on the two banks of the river and in line with the foot of tree. If the angles of depression of the feet of the poles from a point at which the man is sitting on the tree on either side of the river are 60^0a n d30^0 respectively. Find the width of the river.

Two posts are 4 m apart. Both posts are on same side of a tree. If the angles of depression of these posts when observed from the top of the tree are 45 and 60° respectively, then what is the height of the tree?

Two poles of equal heights are standing opposite to each other on either side of the road , which is 100 m wide . From a point between them on the road , the angles of elevation of the top of the poles are 60^(@) and 30^(@) respectively .Find the height of the poles .

From the top of a building 90 m high, the angles of depression of the top and the bottom of a tree are 30^(@) and 45^(@) respectively. What is the height of the tree?

There are two temples,one on each bank of a river,just opposite to each other.One temple is 54 m high.From the top of this temple,the angles of depression of the top and the foot of the other temple are 30o and 60o respectively. Find the width of the river and the height of the other temple.

There are two temples,one on each bank of a river,just opposite to each other.One temple is 50m high.From the top of this temple,the angles of depression of the top and the foot of the other temple are 30o and 60o respectively. Find the width of the river and the height of the other temple.

PQR is a triangular park with PQ=PR=200m . A T.V tower stands at the mid-point of QR.If the angles of elevation of the top of the tower at P,Q and R respectively 45^(@),30^(@) and 30^(@) then the height of the tower in m is

Two poles of equal heights are standing opposite to each other on either side of the road which is 80m wide.From a point between them on the road the angles of elevation of the top of the poles are 60o and 30o respectively. Find the height of the poles and the distances of the point from the poles.