ExamBro
ExamBro
JEE Mains · Maths · STD 11 - 10.1 circle and system of circle

माना कि रेखाऐं \(y +2 x =\sqrt{11}+7 \sqrt{7}\) तथा \(2 y + x =2\) lsqrt \(\{11\}+6\) lsqrt 7 वृत \(C :( x - h )^2+( y - k )^2= r ^2\) का अभिलम्ब है। यदि रेखा \(\sqrt{11} y -3 x =\frac{5 \sqrt{77}}{3}+11\), वृत \(C\) पर स्पर्श रेखा है, तब \((5 h -8 k )^2+5 r ^2\) का मान बराबर है \(.............\)

  1. A \(916\)
  2. B \(816\)
  3. C \(856\)
  4. D \(86\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(816\)

Step-by-step Solution

Detailed explanation

Normal are \(y +2 x =\sqrt{11}+7 \sqrt{7}\) \(2 y + x =2 \sqrt{11}+6 \sqrt{7}\) Center of the circle is point of intersection of ormals i.e. \(\left(\frac{8 \sqrt{7}}{3}, \sqrt{11}+\frac{5 \sqrt{7}}{3}\right)\) Tangent is \(\sqrt{11} y-3 x=\frac{5 \sqrt{77}}{3}+11\) Radius will…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app