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Intermediate June 2017 Unit 2 Q20

WJECIntermediateCurrent spec2 marksCircle Theorems

20. Points A, B and C lie on the circumference of a circle, centre O.
\(A\widehat{C}B\) = 37°.

Circle centre O with A, B and C on the circumference; chords CA and CB with angle ACB = 37°; radii OA and OB

Diagram not drawn to scale

Calculate the size of the reflex angle \(A\widehat{O}B\). [2]

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