On the top of a hemispherical dome of radius r, there stands a flag of height h.From a point on the ground the elevation of the top of the flag is `30^@`. After moving a distance 'd' towards dome,when the flag is just visible,then elevation is `45^@`. The value of r and h is:

On the top of a hemispherical done of radius r, there stands a flag of height h. From a point on the groung, the elevation of the top of the flag is 30^(@) . After moving a distance d towards the done, when the flag is just visible, the elevation is 45^(@) . The ratio of h to r is equal to

From a point on the level ground, the angle of elevation of the top of a pole is 30^@ . On moving 20 metres nearer, the angle of elevation is 45^@ . Then the height of the pole, in metres , is

From a point on the level ground , the angel of elevation of the top of a pole is 30^(@) . On moving 20 meters nearer, the angle of elevation is 45^(@) . Then the height of the pole, in meters, is

A flag staff of length 'd' stands on tower of height h. IF at a point on the ground the angle of elevation of the tower and top of the flag staff be alpha, beta then h=

The angle of elevation of the top of a pillar of height h at a point on the ground at a distance x from the pillar is 30^(@) . On walking a distance 'd' towards the pillar the angle of elevation becomes 60^(@) . Then, which one of the following is correct?

The angle of elevation of the top of a pillar of height h at a point on the ground at a distance x from the pillar is 30^(@). On walking a distance d' towards the pillar the angle of elevation becomes 60^(@) Then, which one of the following is correct?

A flag-staff stands on the top of a 5 m high tower. From a point on the ground, the angle of elevation of the top of the flag-staff is 60^@ and from the same point, the angle of elevation of the top of the tower is 45^@ . Find the height of the flag-staff.

A statue 1.6m tall stands on the top of pedestal. From a point on the ground, the angle of elevation of the top of the statue is 60^@ and from the same point the angle of elevation of the top of the pedestal is 45^@ . Find the height of the pedestal.

A flag-staff stands on the top of a 5m high tower.From a point on the ground,the angle of elevation of the top of the flag-staff is 60o and from the same point,the angle of elevation of the top of the tower is 450. Find the height of the flag-staff.