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Question

The centre of the circle passing through (0, 0) and (1, 0) and touching the circle x2+y2=9 is

A
12,12
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B
12,2
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C
32,12
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D
12,32
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Solution

The correct option is B 12,2


From the figure, we get (12)2+λ2=32λ=±2
Hence, the centres of the circles are
(12,±2)

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