If O is centre of a circle and Chord PQ makes an angle 50° with the tangent PR at the point of contact P, find the angle made by the chord at the centre.

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MCQ (Single)Definition of Tangent to a CircleTheorem on Tangent Perpendicular to Radius at Point of Contact

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MCQ (Single)Definition of Tangent to a Circle

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TextTheorem on Tangent Perpendicular to Radius at Point of Contact