Mathematics
WAEC 1989
The angle of elevation of X from Y is 30
o. If XY = 40m, how high is X above the level of Y?
-
A.
10m
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B.
20m
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C.
20√3m
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D.
40m
-
E.
50m
Correct Answer: Option B
Explanation
XZ = 40 x sin30
o
= 20m
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