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AP EAMCET20227 Jul 2022Evening ShiftMathematicsCircleActual

The equation of circle with centre (2,-3) and touching X -axis is

Options

  1. Ax^2+y^2-4 x-6 y+4=0
  2. Bx^2+y^2-4 x-6 y-8=0
  3. Cx^2+y^2-4 x+6 y+4=0
  4. Dx^2+y^2+4 x-6 y+8=0

Correct answer

C. x^2+y^2-4 x+6 y+4=0

Step-by-step solution

(c) Centre is (2,-3) , circle touches X -axis, Radius =|-3|=3 . Circle is (x-2)^2+(y+3)^2=9 x^2+y^2-4 x+6 y+4=0

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