Height of a flying kite from the ground is 300 metre and if the angle of elevation of that kite is `30^@`, then find the distance of kite from the boy to fly the kite.

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.

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

The heights of two towers are 210 metres and 70 metres respectively. If the angle of elevation of the top of the first twoere form the bottom of the second tower be 60^@ , then find the angle of elevation of the top of the scecond tower from the bottom of the first tower.

From the top of a tower , which is 240m high , if the angle of depression of a point on the ground is 30^@ . then the distance of the point from the foot of the tower is

From a point at a height of 30 metre from the water level of a lake the angle of elevation of an aeroplane is 30^@ and the angle of depression of the shadow of the aeroplane in water of the lake is 60^@ . What is the height of the aeroplane from the water surface of the lake?

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

From the two points on the same straight line with the foot of a tower the angles of elevation of the top of the tower are complementary. If the distance of the two points from the foot of the tower are 9 metre and 16 metre and the two points lie on the same side of the tower, then find the hegiht of the tower.

The Heights of two tower are 180 metres and 60 metres respectively. If the angle of elevation of the top of the first tower from the foot of the second tower is 60^(@) . Calculate the angle of elevation of the top of the second tower from the foot of the first.

A man standing on the deck of a ship, which is 10m above the water level, observes the angle of elevation of the top of a hill as 60^@ and the angle of depression of the base of the hill as 30^@ . Calculate the distance of the hill from the ship and the height of the hill.