1.  A man standing at a point P is watching the top of a tower, which makes an angle of elevation of 30ï¿½ with the man's eye. The man walks some distance towards the tower to watch its top and the angle of the elevation becomes 60ï¿½. What is the distance between the base of the tower and the point P? 


2.  Two ships are sailing in the sea on the two sides of a lighthouse. The angle of elevation of the top of the lighthouse is observed from the ships are 30Â° and 45Â° respectively. If the lighthouse is 100 m high, the distance between the two ships is: 


3.  An observer 1.6 m tall is 203 away from a tower. The angle of elevation from his eye to the top of the tower is 30ï¿½. The heights of the tower is: 


4.  From a point P on a level ground, the angle of elevation of the top tower is 30ï¿½. If the tower is 100 m high, the distance of point P from the foot of the tower is: 


5.  The angle of elevation of a ladder leaning against a wall is 60ï¿½ and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is: 

