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In the diagram, O is a circle centre of the circle PQRS and < PSR...

Mathematics
WAEC 2012
In the diagram, O is a circle centre of the circle PQRS and < PSR = 86o. If < PQR = xo, find x
  • A. 108o
  • B. 172o
  • C. 130o
  • D. 50o
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Correct Answer: Option B
Explanation
xo = 86 x 2(angle at centre = 2 x angle at circumference)

= 172o
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