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

यदि एक समबाहु त्रिभुज का अंतः केंद्र \((1,1)\) है तथा इसकी एक भुजा का समीकरण \(3 x+4 y+3=0\) है, तो इस त्रिभुज के परिवृत्त का समीकरण है

  1. A \({x^2} + {y^2} - 2x - 2y - 14 = 0\)
  2. B \({x^2} + {y^2} - 2x - 2y - 2 = 0\)
  3. C \({x^2} + {y^2} - 2x - 2y +2 = 0\)
  4. D \({x^2} + {y^2} - 2x - 2y - 7 = 0\)
Verified Solution

Answer & Solution

Correct Answer

(A) \({x^2} + {y^2} - 2x - 2y - 14 = 0\)

Step-by-step Solution

Detailed explanation

Let radius of circumircles be According to the question, \(\frac{r}{2} = \frac{{10}}{5} \Rightarrow r = 4\) So equation of Required circle is \({\left( {x - 1} \right)^2} + {\left( {y + 1} \right)^2} = 16\) \( \Rightarrow {x^2} + {y^2} - 2x - 2y - 14 = 0\)
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