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Mathematics, 26.05.2021 06:30 mamaditto9480

The diagram shows a circle, center O. Chord AB and diameter CD are parallel. Arc AB subtends an angle of 78 at O. What is the size of the angle arc AC subtends at O? Diagram and answers are in the photo, please explain the answer


The diagram shows a circle, center O. Chord AB and diameter CD are parallel. Arc AB subtends an ang

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The diagram shows a circle, center O. Chord AB and diameter CD are parallel. Arc AB subtends an angl...

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