From a point on the ground, the angle of elevation of an aeroplane flying at an alitdude of 600m change from `40^(@) " to " 30^(@)` in 5 seconds. Find the speed of the aeroplane ( in kmph).

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.

The angle of elevation of an aeroplan flying at a height of 1500 m from the gruond is found to be 60^@ from the airport. Find the horizontal distance of the aeroplane from the airport is

The angle of elevation of an aeroplane from a point on the ground is 45o .After a flight of 15 seconds,the elevation changes to 30o .If the aeroplane is flying at a height of 3000 metres, find the speed of the aeroplane.

The angle of elevation of an aeroplane from a point on the ground is 45^@ . After a flight of 15 sec, the eleva-tion changes to 30^@ . If the aeroplane is flying at a height of 3000 meters, find the speed of the aeroplane.

The angle of the elevation of an aeroplane from a point on the ground is 45^(@) . After flying for 15 seconds, the elevation changes to 30^(@) . If the aeroplane is flying at a height of 2500 metres. Find the speed of the aeroplane.

The angle of elevation of an aeroplane from a point on the ground is 45^@ . After a flight of 15 seconds, the elevation changes to 30^@ . If the aeroplane is flying at a height of 3000 metres, find the speed of the aeroplane.

The angle of elevation of an aeroplane from a point on the ground is 60^(@) . After a flight of 30 seconds the angle of elevation becomes 30^(@) . If the aeroplane is flying at a constant height of 3000 sqrt(3) m. Find the speed of the aeroplane.

An aeroplane is moving one kilometer high from west to east horizontally. From a point on the ground due south, the angle of elevation of the aaeroplane is 60^(@) , and after 10 second, the angle of elevtion of the aeroplane is observed as 30^(@) , then the speed (in m//s ) of the aeroplane is

The angle of elevation of an aeroplane from a point P on the ground is 60. After a flight of 15 seconds,the angle of elevation changes to 30 . If the aeroplane is flying at a constant height of 15003m, find the speed of the aeroplane.

The angle of elevation of an aeroplane from a point P on the ground is 60^@ . After a flight of 15 seconds, the angle of elevation changes to 30^@ . If the aeroplane is flying at a constant height of 1500 sqrt3 m, find the speed of the aeroplane