The angle of elevation of a cloud from a point 200 m above a lake is `30^@` and the angle of depression of its reflection in the lake is `45^@`. Find the height of the cloud from the lake.

The angle of elevation of a stationary cloud from a point 2500 feet above a lake is 30^@ and the angle of depression of its reflection in the lake is 45^@ .Find the height of cloud above the lake water surface .

The angle of elevation of a cloud from a point h metres above a lake is 45^@ and the angle of depression of its reflection in the lake is 60^@ . Which of the following is the height of the cloud?

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?

From a point a metres above a lake the angle of elevation of a cloud is alpha and the angle of depression of its reflection is beta . Prove tha the height of the cloud is (a sin(alpha + beta))/(sin(beta-alpha)) metres.

A statue stands on the top of a 2m tall pedestal. From a point on the ground, the angle ofelevation of the top of the statue is 60^(@) and from the same point, the angle of elevation of the top of the pedestal is 45^(@) . Find the height of the statue.

The angle of elevation from the bottom of a tower 20 meter a part is 45^@ . Find the height of the tower.

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.

From the top of a building, the angle of elevation of the top of a cell tower is 60^(@) and the angle of depression to its foot is 45^(@) . If distance of the building from the tower is 7m, then find the height ofthe tower.

From the bottom of a 'tila' the angle of elevation of its unreachable top is 45^@ . After moving 100 metre at an angle of 30^@ along the tila the angle of elevation becomes 60^@ . Find the height of the tila. (sqrt3= 1.732)

The angle of elevation of the top of a building from the foot of the tower is 30^(@) and the angle of elevation of the top of the tower from the foot of the building is 60^(@) . If the tower is 30 m high, find the height of the building.