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Questions  

If the points A (2, 5) and B are symmetrical about the tangent to the circle x2+y24x+4y=0 at the origin then the coordinates of B, are

a
(5, - 2)
b
(1, 5)
c
(5, 2)
d
none of these

detailed solution

Correct option is C

The equation of the tangent to the given circle the origin is y=x. Image of the point A(2,5) in y=x is (5,2 Thus, the coordinates of B are ( 5, 2).

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