Mathematics
WAEC 1989
In the diagram, O is the center of the circle, If ∠POQ = 80
o and ∠PRQ = 5x, find the value of x.
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A.
4o
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B.
8o
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C.
16o
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D.
20o
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E.
32o
Correct Answer: Option B
Explanation
80o = 2 x 5x(angle at the center)
=80o = 10x; x = 80o/10
= 8o
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