The shadow of a flag pole is 30 metres. If the altitude of the sun is at 30o then the height of the flag pole is
30/√3 m
15 m
18 m
30√3 m
On a horizontal plane there is a vertical tower with a flag pole on the top of the tower. At a point 9 metres away from the foot of the tower the angle of elevation of the top and bottom of the flag pole are 60∘ and 30∘ respectively. Find the height of the tower and the flag pole mounted on it.