Angel formed at the top of a cone is an exemple of'Plane Angle'.

From the bottom of a pole of height h, the angle of elevation of the top of a tower is alpha . The pole subtends an angle beta at the top of the tower. find the height of the tower.

From the top of a 12 m high building, the angle of elevation of the top of a cable tower is 60^(@) and the angle of depression of its foot is 30^(@) . Determine the height of the tower .

From the top of a building, the angle of elevation of the top of a cell tower is 60^(@) and the angle of depression to its foot is 45^(@) . If distance of the building from the tower is 7m, then find the height ofthe tower.

A solid sphere of mass m and radius r is released from rest at the top of smooth inclined plane of inclination theta . The ratio of acceleration when it rolls down the plane without slipping and when it slipping down the plane is

The angle of elevation of the top of a building from the foot of the tower is 30^(@) and the angle of elevation of the top of the tower from the foot of the building is 60^(@) . If the tower is 30 m high, find the height of the building.

A pole 5 m high is fixed on the top of a tower. The angle of elevation of the top of the pole observed from a point 'A' on the ground is 60^(@) and the angle of depression to the point 'A' from the top of the tower is 45^(@) . Find the height of the tower. (sqrt(3)=1.732)

the angle of elevation of the top of a tower at a point on the ground 50m away from the foot of the tower is 45^(@) . Then the height of the tower ( in meters ) is ………. .