(i) The elevation angles of an artificial satellite when measured from two ground stations are unity and 30^(@) and 60^(@) respectively.

The angles of elevation of the top of a tower 72 metre high from the top and bottom of a building are 30^(@) and 60^(@) respectively. What is the height (in meters) of building ?

A Satellite flying at height h is watching the top of the two tallest mountains in Uttarakhand and Karnataka ,them being Nanda Devi(height 7,816m) and Mullayanagiri (height 1,930 m). The angles of depression from the satellite , to the top of Nanda Devi and Mullayanagiri are 30 ""^(@) and 60 ""^(@) respectively. If the distance between the peaks of two mountains is 1937 km , and the satellite is vertically above the midpoint of the distance between the two mountains. What is the angle of elevation if a man is standing at a distance of 7816m from Nanda Devi?

From a point A on the ground , the angles of elevation of the top of a 10 m tall building and a helicopter hovering at some height of the building are 30^(@) and 60^(@) respectively. Find the height of the helicopter above the building

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

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.

A flagstaff of length l is fixed on the top of a tower of height h. The angles of elevation of the top and bottom of the flagstaff at a point on the ground are 60^(@) and 30^(@) respectively. Then

The angles of elevation of the top of a temple , from the foot and the top of a building 30 m high are 60^(@)and30^(@) respectively .Then the height of the temple 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

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?