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 when flying at a height of 4000m from the ground passes vertically above another aeroplane at an instant when the angles of the elevation of the two planes from the same point on the ground are 60^@ and 45^@ respectively. Find the vertical distance between the aeroplanes at that instant.

An aeroplane when flying at a height of 4000m from the ground passes vertically above another aeroplane at an instant when the angles of the elevation of the two planes from the same point on the ground are 60^0&45^0 respectively. Find the vertical distance between the aeroplanes at that instant.

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 lower window of a house is at a height of 2m above the ground and its upper window is 4m vertically above the tower window. At certain instant the angles of elevation of a balloon from these windows are observed to be 60^(@) and 30^(@) , respectively. Find the height of the balloon above the ground.

The angle of elevation of the top of a tower from a point on the ground is 60^(@) . which is 25 m away from the foot of the tower. Find the height of the tower

The angle of elevation of the top of a tower at any point on the ground is 30^@ and moving 20 metres towards the tower it becomes 60^@ . The height of the tower is

The angles of elevation of a cliff at a point A on the ground and at a point B 100 mt vertically above A are alpha are beta respectively.The height of the cliff in metres is

An aeroplane id flying at a height of 300 m above the ground. Fying at this height , theangles of depression from the aeroplane of two points on both banks of a river in opposite directions are 45^(@)" and "60^(@) respectively. Find the width of the river.[use sqrt3=1.732 ]

A 7 m long flagstaff is fixed on the top of a tower on the horizontal plane. From a point on the ground, the angles of elevation of the top and bottom of the flagstaff are 45^(@)" and " 30^(@) respectively. Find the height of the tower.

The angle of depression between a flying kite and 'a' point on the ground is 60 m. If the string makes 30^(@) .Find the height of the kite from the ground.