In order to cross a river, a person has to cover a distance of 250 m along the straight bridge from one end to the other. I f the bridge makes an angle of 30° with the edge of the river, find the width of the river.

An electric pole is 10 m high. A steel wire tied to the top of the pole is affixed at a point on the ground to keep the pole upright. If the steel wire makes an angle of 45° with the horizontal through the foot of the pole. Find the length of the steel wire.

A circus artist climbs on a rope which is tied between the top of a pole and a fixed point on the level ground. The height of the pole is 12 m and the rope makes an angle of with the ground. Find the distance covered by the artist to climb to the top of the pole. [sinθ= 0.5783]

An aeroplane flies from the ground making an angle of 30° with the ground and covers a distance of 184 m. What will be the height of the aeroplane above the ground?

A man of height 1 .5 m sees the top of a tree and the angle of elevation of the top at his eye is 60°. Find the height of the tree if the distance of the man from the tree is 36 m.