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JEE Main 2012Medium

Q.The equation of the circle with centre on the line y = x + 1 and touching the line x + y = 3 is

a
(x−1)2+(y−2)2=1(x-1)^2 + (y-2)^2 = 1
b
(x+1)2+(y+2)2=1(x+1)^2 + (y+2)^2 = 1
c
(x−2)2+(y−1)2=1(x-2)^2 + (y-1)^2 = 1
d
(x+2)2+(y+1)2=1(x+2)^2 + (y+1)^2 = 1

Correct Answer: Option A

The correct solution involves applying the fundamental concept to derive the final value step by step...

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