As observed from the top of a 75 m high lighthouse from the sea-level,the angles of depression of two ships are `30^@` and `45^@`.If one ship is exactly behind the other on the same side of the lighthouse,find the distance between the two ships.

As observed from the top of a light house, 100m high above sea level, the angle of depression of a ship sailing directly towards it, changing from 30° to 60°.Determine the distance travelled by the ship during the period.

When observed from the top of a 125 m high building,the angle of depression of a car was found to be 30^@ .Find the distance of the car from the building.

From the top of a building 100m high ,the angle of depression of the top and bottom of a tower observed to be 45° and 60° respectively. Find the height of the tower. Also find the distance between the foot of the building.

From the top of a 7 m high building ,the angle of elevation of the top of a cable tower is 60^@ and the angle of depression of its foot is 45^@ .Determine the height of the tower.

From the top of a building 60m high the angle of depression of the top and the bottom of vertical lamp post an observed 30° and 60 ° respectively.Find The height of the lamp post.

Two poles of equal heights are standing opposite 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 60^@ and 30^@ respectively.Find the height of the poles and the distances of the point from the poles.

From the top of a building 60m high the angle of depression of the top and the bottom of vertical lamp post an observed 30° and 60 ° respectively.Find The horizontal distance between the building and the lamp post.

There are two poles on each on either bank of a river just opposite to each other.One pole is 60m high.From the top of this pole the angles of depression of the top and the foot of the other pole are 30° and 60° respectively. Find the width of the river and the height of the other pole.

From a point which is 200sqrt2 m away from the base of a temple the angle of elevation of the top of the temple is 45^@ .Find the height of the temple and the slanting distance between the top of the temple and the point.

A man sitting at a height of 20m in a tall tree on a small island in the middle of the river observes two poles directly opposite each other on the two banks of river and in line with the foot of the tree. If the angles of depression of the feet of the poles from a point at which the man is sitting on the three on either side of the river are 60° and 30° respectively. Find the width of the river.