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Question

The locus of the mid-point of the chord of contact of tangents drawn from points lying on the straight line 4x-5y=20 to the circle x2+y2=9 is


A

20(x2+y2)236x+45y=0

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B

20(x2+y2)+36x45y=0

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C

36(x2+y2)20x+45y=0

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D

36(x2+y2)+20x45y=0

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