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1 . The angle of elevation of the sun, when the length of the shadow of a tree 3 times the height of the tree, is:
A. 10º B. 30º
C. 50º D. 70º

2 . From a point P on a level ground, the angle of elevation of the top tower is 30º. If the tower is 100 m high, the distance of point P from the foot of the tower is:
A. 148 m B. 154 m
C. 162 m D. 173 m

3 . The angle of elevation of a ladder leaning against a wall is 60º and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is:
A. 9.2 m B. 19.2 m
C. 29.2 m D. 39.2 m

4 . 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 30º and 45º respectively. If the lighthouse is 100
A. 173 m B. 273 m
C. 373 m D. 473 m

5 . From a point P on a level ground, the angle of elevation of the top tower is 30º. If the tower is 200 m high, the distance of point P from the foot of the tower is:
A. 306 m B. 321 m
C. 346 m D. 377 m




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