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.

The height of a chimney when it is found that, on walking towards it 50 m in a bizontal line through its base, the angle of elevation of its kop changes from 30^(@) to 45^(@) is:

A TV tower stands vertically on a bank of a canal. From a point on the other bank directly opposite the tower, the angle of elevation of the top of the tower is 60^(@) . From another point 20 m away from this point on the line joining this point to the foot of the tower, the angle of elevation of the top of the tower is 30^(@) (see figure below). find the height of the tower and the width of the canal. .

A TV tower stands vertically on a bank of a canal. From a point on the other bank directly opposite the tower, the angle of elevation of the top of the tower is 60^(@) . From another point 20m away from this point on the line joining this point to the foot of the tower, the angle of elevation of the top of the tower is 30^(@) (see Figure ). Find the height of the tower and the width of the canal.

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

The angle of elevation of the top Q of a vertical tower PQ from a point X and the ground is 60^(@) . From a point Y, 40m vertically above X, the angle of elevation of the top Q of the tower is 45^(@) . Find the height of the tower PQ and the distance PX. (use sqrt(3) = 1.73).