ExamBro
ExamBro
TS EAMCET · Maths · Circle

If the points 2, 3 and K, -2 are conjugate with respect to the circle x2+y2-2x+4y-2=0, then K=

  1. A 8
  2. B 6
  3. C 4
  4. D 3
Verified Solution

Answer & Solution

Correct Answer

(A) 8

Step-by-step Solution

Detailed explanation

Equation of circle is x2+y2-2x+4y-2=0 Given Px1,y1≡2,3 & QK,-2 are conjugate with respect to given circle. Equation of polar of P is xx1+yy1-2x+x12+4y+32-2=0 ⇒2x+3y-1x+2+2y+3-2=0 ⇒2x+3y-x-2+2y+6-2=0 ⇒x+5y+2=0 ∵P2,3 & QK,-2 are…