Q1. A man is watching from the top of tower a boat speeding away from the tower The boat makes an angle of depression of 45 with the man s eye when at a distance of 60 meters from the tower After 5 seconds the angle of depression becomes 30 What is the approximate speed of the boat assuming that it is running in still water

Q2. From the top of 75 m high tower the angle of depression of two points P and Q on opposite side of the base of the tower on level ground is and such that and What is the distance between the points P and Q

Q3. A pole stands vertically on a road which goes in the north south direction P Q are two points towards the north of the pole such that PQ b and the angles ofelevation ofthe top ofthe pole at P Q are a B respectively Then the height of the pole is

Q4. A vertical pole fixed to the ground is divided in the ratio 1 9 by a mark on it with lower part shorter than the upper part If the two parts subtend equal angles at a place on the ground 15 m away from the base of the pole what is the height of the pole

Q5. From the top of a 12 m high building the angle of elevation of the top of a tower is 60oand the angle of depression of the foot of the tower is such that What is the height of the tower