The angles of elevation of an aeroplane from two places 10 km apart are found to be `60^(@) and 30^(@)` respectively. Find the height of the aeroplane.

An aeroplane flying at a height 300 metre above the ground passes vertically above another plane at an instant when the angles of elevation of the two planes from the same point on the ground are 60^(@) and 45^(@) respectively.Then the height of the lower plane from the ground in metres is

An aeroplane flying at a height of 300 m above the ground passes vertically above another plane at an instant when the angles of elevation of two planes from the same point on the ground are 60^(@) and 45^(@), respectively. What is the height of the lower plane from the ground?

If the angle of elevation of a baloon from two consecutive kilometre -stones along a road are 30^(@)and60^(@) respectively , then the height of the balloon above the ground will be

If the angles of elevation of a ballon from the two consecultive kilometre stones along a road are 30^@ and 60^@ respectively, then the height of the balloon above the ground will be

An aeroplane, when 3000 m high, passes vertically above anthoer aeroplane at an instant when the angles of elevation of the two planes from the same point on the ground are 45^(@)" and "60^(@) respectively. Find the vertical distance between the tow planes.

The angles of elevation of the top of a tower at the top and the foot of a pole of height 10m are 30^(@) and 60^(@) respectively.The height of the tower is

An aeroplane flying at a height of 3000 m passes vertically above another aeroplane at an instant when the angles of elevation of the two planes from some point on the ground are 60^(@) and 45^(@) respectively. Then the vertical distance between the two planes is

From the top of a building, the angle of elevation and depression of top and bottom of a tower are 60^(@) and 30^(@) respectively. If the height of the building is 5m, then find the height of the tower.