From a point at a height of 27 metres above a lake the angle of elevation of the top of atree on opposite side is `30^@` and the angle of depression of the image is `45^@`. The height ofthe tree from water level is -- mts

From a point 12 m above the water level, the angle of elevation of the top of a hill is 60^(@) and the angle of depression of the base of the hill is 30^(@) . What is the height (in m)of the hill?

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.

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?

The angle of elevation of a stationary cloud from a point 25 m above a lake is 15^(@) and the angle of depression of its image in the lake is 45^(@) . The height of the cloud above the lake level is

The angle of elevation of a cloud from a point 200 m above the lake is 30^@ and the angle of depression of its. reflection in the lake is 60^@ . The height of the cloud above the lake is

If the angle of elevation of a cloud from a point 200m above a lake is 30^(@) and the angle of depression of its reflection in the lake is 60^(@) .Then the height of the cloud above the lake is :

The angle of elevation of a cloud from a point 250 m above a lake is 15^(@) and angle of depression of its reflection in lake is 45^(@) . The height of the cloud is

The angle of elevation of a cloud from a point 250 m above a lake is 15^(@) and angle of depression of its reflection in lake is 45^(@) . The height of the cloud is

From the top of a chiff 30 metres high, the angle of elevation of the top of a tower is found to be equal to the angle of depression of the foot of the tower. The height of the tower is