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

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

The angle of elevation of the top of a vertical tower P Q from a point X on the ground is 60o . At a point Y , 40m vertically above X , the angle of elevation of the top is 45o . Calculate the height of the tower.

The angle of elevation of the top of a vertical tower P Q from a point X on the ground is 60o . At a point Y , 40m vertically above X , the angle of elevation of the top is 45o . Calculate the height of the tower.

The angle of elevation of the top of a vertical tower P Q from a point X on the ground is 60o . At a point Y , 40m vertically above X , the angle of elevation of the top is 45o . Calculate the height of the tower.

The angle of elevation of the top Q of a vertical tower PQ from a point X on the ground is 60^@ . At a point Y, 40 m vertically above X, the angle of elevation is 45^@ . Find the height of the tower PQ and the distance XQ.

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 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