The angles of elevation and depression of tine top and bottom of a lighthouse from the top of a building 60 m, are 30° and 60° respectively. Find :
(i)    The difference between the heights of the light-house and the building.
(ii) Distance between the light-house and the building.
(ii)    Distance between light-house and building = 34.64 m.]
Or
The height of a house students a right angle at the opposite window. The angle of elevation of the window from the base of the house is 60°. If the width of the road is 6 m. Find the height of the house.