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TS EAMCET · Maths · Circle

If the equation of the circle which passes through the point (1,1) and cuts both the circles x2+y2-4x-6y+4=0 and x2+y2+6x-4y+15=0 orthogonally is x2+y2+2gx+2fy+c=0, then 5g+2f+c=

  1. A 0
  2. B 1
  3. C 3
  4. D 2
Verified Solution

Answer & Solution

Correct Answer

(D) 2

Step-by-step Solution

Detailed explanation

S1: x2+y2-4x-6y+4=0 S2: x2+y2-6x-4y+15=0 S3: x2+y2+2gx+2fy+c=0 S1 & S3 cuts orthogonally 2g(-2)+2f(-3)=c+4 4g+6f=-c-4  ...(1) S2 & S3 cuts orthogonally 2g(3) +2f(-2)=c+15 6g-4f=c+15  ...(2) S3 passes through…