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The angle of elevation of the top of a tree 39m away from a point...

Mathematics
WAEC 1991
The angle of elevation of the top of a tree 39m
away from a point on the ground is 30o. Find the height of the tree
  • A. 39√3m
  • B. 13√3m
  • C. 13/\(\sqrt{3}\)m
  • D. 13/3\(\sqrt{3}\)m
  • E. \(\sqrt{3}\)/13m
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Correct Answer: Option B
Explanation
x/25 = tan 30o
x = 39 x 1/√3 = 13√3m
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