Q.
If the points A(1,4) and B are symmetrically about the tangent to the circle x2+y2−x+y=0 at the origin then coordinates of B are
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a
(1,2)
b
(2,1)
c
(4,1)
d
None of these
answer is C.
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Detailed Solution
The tangents at the origin are y−x=0 .B is the image of A(1,4) by this line.B=4,1
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