Ex 11.1, 4 - Equation of circle centre (1, 1) radius root2 - Ex 11.1

  1. Chapter 11 Class 11 Conic Sections
  2. Serial order wise
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Ex 11.1, 4 Find the equation of the circle with centre (1, 1) and radius 2 We know that equation of a circle is (x h)2 + (y k)2 = r2 Where (h, k) is the centre & r is the radius Here Centre (h, k) = (1, 1) So h = 1 & k = 1 & radius (r) = 2 . Putting values in (1) (x 1)2 + (y 1)2 = ( 2 )2 x2 + 12 2x + y2 + 12 2y = 2 x2 + y2 2x 2y + 2 = 0

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