If the tangent at the point P on the circlex^{2}+y^{2}+6 x+6 y=21at a – InterviewSolution

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1.	If the tangent at the point P on the circlex^{2}+y^{2}+6 x+6 y=21at a point Q on the y-axis, then length of PQ is(A)42 mects the straight line 5x -2y +6 0(B) 215(C) 5(D) 345
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