A plane is flying along a road with a constant speed of 600 km/h towards a point on the road. Its angle of elevation changes from `30^(@)" to "60^(@)` in 12 seconds. Find the vertical height of the plane.

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).

Two poles of equal height are standing opposite to each other on either side of the road, which is 80 m wide. From a point between then on the road, the angles of elevation of top of the poles are 60^(@)" and "30^(@) . Find the height of poles.

A person, walking 20 mts from a point towards a flagpost along a horizontal passing through its base, observes that its angle of elevation changes from 30^@ to 45^@ Find the height of the flagpost.

A aeroplane is flying horizontally with speed of 432km/hr at higher h meter from ground.Its angle of elevation from a point on ground is 60^(@) .After 20 sec its angle of elevation from same point is 30^(@) then the height h is equal to

Problems of finding the height of tower if angle of elevation is changing on walking away/towards the tower.ex-1The angle of the elevation of the top of the tower at a point on the ground is 30^(0). On walking 24m towards the tower the angle of elevation changes from 60^(0). Find the height of the tower.

An aeroplane flying horizontally 1 km above the ground is observed at an elevation of 60^(@) . After a flight of 10 seconds, its angle of elevation is observed to be 30^(@) from the same point on the ground. Find the speed of the aeroplane.

A vertical tower of height 20 m stands on a horizontal plane and is surmounted by a vertical flag staff of height h. At a point on the plane, the angle of elevation of the bottom and top of flag staff are 45^(@) and 60^(@) , respectively. Find the value of h.

Two towers of the same height stand on either side of a road 60 m wide. At a point on the road between the towers, the elevations of the towers are 60^(@) and 30^(@) . Find the height of the towers and the position of the point.

The angle of elevation of an aeroplane from a point on the ground is 60^(@) . After flying for 30 seconds, the angle of elevation charges to 30^(@) . If the aeroplane is flying at a height of 4500 m, then what is the speed (in m/s) of aeroplane