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[" 37.From origin "O" tangents "OP" and ...

[" 37.From origin "O" tangents "OP" and "OQ" are drawn to the circle "],[x^(2)+y^(2)+2gx+2fy+c=0" .Then the circumocenter of the "],[" triangle "OPQ" must be at "],[[" (a) "(-g,-f),," (b) "(g,f)],[" (c) "(-f,-g),," (d) None of these "]]

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