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[" 51.In Fig."8.79," PQ is a tangent fro...

[" 51.In Fig."8.79," PQ is a tangent from an external point "P" to a circle with centre "O" and "OP" cuts "],[" the circle at "T" and "QOR" is a diameter.If "/_POR=130^(@)" and "S" is a point on the circle,find "],[/_1+/_2" ."]

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