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TS EAMCET · Maths · Circle

If the circle Sx2+y2-4=0 intersects another circle S'=0 of radius 522 in such a manner that the common chord is of maximum length with slope equal to 14, then the centre of S'=0 is

  1. A -1,4 or 1,-4
  2. B -22,22 or 22,-22
  3. C -22,22 or 22,-22
  4. D 4,-1 or -4,1
Verified Solution

Answer & Solution

Correct Answer

(B) -22,22 or 22,-22

Step-by-step Solution

Detailed explanation

S≡x2+y2-4=0, r1=2, C1(0,0) Let center of S'=0, is C2h,k, r2=522 Equation of S'=0, x-h2+y-k2=252 ⇒x2+y2-2xh-2yk+h2+k2-252=0 Equation of AB     S'-S=0 2xh+2yk=h2+k2-172  ...i Slope of…
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