Q.6. A man standing at a point P is watching the top of a tower, which makes an angle of elevation of 300 with the man’s eye. The man walks some distance towards the tower to watch its top and the angle of elevation becomes 600. What is the distance between the base of the tower and the point P?
(a)
(b) 8 units
(c) 12 units
(d) data inadequate
(e) None of these
Q.7. From a point P on a level ground, the angle of elevation of the top of a tower is 300 If the tower is 100 m high, the distance of point P from the foot of the tower is:
(a) 149 m
(b) 156 m
(c) 173 m
(d) 200 m
Q.8. Two ships are sailing in the sea on the two sides of a lighthouse. The angles of elevation of the top the lighthouse as observed from the two ships are 300 and 450 respectively. If the lighthouse is 100 m high, the distance between the two ships is
(a) 173 m
(b) 200 m
(c) 273 m
(d) 300 m
Very important question on Boat and Stream
Q.9. On the same side of tower, two objects are located. Observed from the top of the tower, their angles of depression are 450 and 600. If the height of the tower is 150 m, the distance between the objects is:
(a) 63.5 m
(b) 76.9 m
(c) 86.7 m
(d) 90 m
Q.10. The angle of elevation of a ladder leaning against a wall is 600 and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is:
(a) 2.3
(b) 4.6
(c) 7.8 m
(d) 9.2 m
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