UPSC NDA I 2016 Mathematics Solved Paper
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For the next two (2) items that follow :
Consider the two circles
( x − 1 ) 2 + ( y − 3 ) 2 = r 2 x 2 + y 2 − 8 x + 2 y + 8 = 0
Consider the two circles
[NDA I 2016]
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What is the distance between the centre of the two circles ?
[NDA I 2016]
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