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In the diagram, O is the center of the circle, If ∠POQ = 80o and...

Mathematics
WAEC 1989
In the diagram, O is the center of the circle, If ∠POQ = 80o and ∠PRQ = 5x, find the value of x.
  • A. 4o
  • B. 8o
  • C. 16o
  • D. 20o
  • E. 32o
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Correct Answer: Option B
Explanation
80o = 2 x 5x(angle at the center)

=80o = 10x; x = 80o/10

= 8o
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