A man is walking towards a vertical pillar in a straight path, at a uniform speed. At a certain point A on the path, he observes that the angle of elevation of the top of the pillar is `30^(@)`. After walking for 10 minutes from A in the same direction, at a point B, he observes that the angle of elevation of the top of the pillar is `60^(@)` . Then the time taken (in minutes) by him, from B to reach the pillar is :

A man is walking towards a vertical pillar in a straight path, at a uniform speed. At a certain point A on the path, he observes that the angle of elevation of the top of the pillar is 30^0 . After walking for 10 minutes from A in the same direction, at a point B, he observes that the angle of elevation of the top of the pillar is 60^0 . Then the time taken (in minutes) by him, from B to reach the pillar, is : (1) 6 (2) 10 (3) 20 (4) 5

A man is walking towards a vertical pillar in a straight path at a uniform speed. At a certain point A on the path, he observes that the angle of elevationof the top of the pillar is 30^(@) . After walking for 5(sqrt3+1) minutes from A in the same direction, at a point B, he observes that the angle of elevation of the top of the pillar is 45^(@) . Then the time taken (in minutes) by him, to reach from B to the pillar, is (take sqrt3=1.73 )

The angle of elevation of the top of a tower from a point on the ground is 30^(@) . After walking 40sqrt3 m towards the tower, the angle of elevation becomes 60^(@) . Find the height of the tower.

A person observed the angle of elevation of the top of a tower as 30^@ . He walked 50m towards the foot of the tower along level ground and found the angle of elevation of the top of the tower as 60^@ . Find the height of the tower.

The angle of elevation of the top of an unfinished tower at a distance of 120 m from its base is 30^(@) . How much higher must the tower be raised so that the angle of elevation of its top at the same point may be 60^(@) ?

The angle of elevation of the top of an unfinished tower at a distance of 120 m from its base is 30^(@) . How much higher must the tower be raised so that the angle of elevation of its top at the same point may be 60^(@) ?

The angle of elevation of the top of a tower from a certain point is 30^o . If the observer moves 20 m towards the tower, the angle of elevation of the top of the tower increases by 15^o . Then height of the tower is

The angle of elevation of the top of a tower from a point on the ground is 30^(@) . After walking 45 m towards the tower, the angle of elevation becomes 45^(@) . Find the height of the tower.

The angle of elevation of the top of a vertical tower P Q from a point X on the ground is 60o . At a point Y , 40m vertically above X , the angle of elevation of the top is 45o . Calculate the height of the tower.

The angle of elevation of the top of a vertical tower P Q from a point X on the ground is 60o . At a point Y , 40m vertically above X , the angle of elevation of the top is 45o . Calculate the height of the tower.