A 1.6 m tall boy is standing at some distance from a 40 m tall building. The angle of elevation from his eyes to the top of the building increases from `30^@` to `60^@` as the walks towards the building. Find the distance he walked towards the building.

A 1.5m tall boy is standing at some distance from a 30m tall building.The angle of elevation from his eyes to the top of the building increases from 30 to 60o as he walks towards the building.Find the distance he walked towards the building.

9.A boy 1.7m tall is standing on a horizontal ground, 50m away from a building. The angle of elevation of the top of the building from his eye is 60^(@) .Calculate the height of the building.(Take sqrt(3)=1.73 ).

A man 2.5 m tall is 32.5 m away from a building. The angle of elevation of the top of the building from his eyes is 60^@ . What is the height of the building? Also, calculate the distance between the eye of man and top point of the building.

A man is standing at a distance of 500 m from a building. He notes that angle of elevation of the top of the building is 3.6^(@) . Find the height of the building. Neglect the height of the man and take pi = 3.14

In fig height of a building is h+2 and point C is h m from the foot of the building. Find the angle of elevation of the top of the building from a point 2 m from point C.

From the top of a building 15m high the angle of elevation of the top of tower is found to be 30^(@). From the bottom of same building ; the angle of elevation of the top of the tower is found to be 60^(@). Find the height of the tower and the distance between tower and building.