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JEE Mains · Maths · STD 12 - 11. three dimension geometry

दो रेखाएँ \(\quad \frac{x-3}{1}=\frac{y+1}{3}=\frac{z-6}{-1}\) तथा \(\frac{ x +5}{7}=\frac{ y -2}{-6}=\frac{ z -3}{4}\) एक दूसरे को बिन्दु \(R\) पर प्रतिच्छेद करते है। बिन्दु \(R\) के \(xy\) तल में प्रतिबिंब के निर्देशांक हैं 

  1. A \((2, -4, -7)\)
  2. B \((2, 4, 7)\)
  3. C \((2, -4, 7)\)
  4. D \((-2, 4, 7)\)
Verified Solution

Answer & Solution

Correct Answer

(A) \((2, -4, -7)\)

Step-by-step Solution

Detailed explanation

Points on the given lines are \((\lambda+3,3 \lambda-1,-\lambda+6)\) and \((7 \alpha-5,-6 \alpha+2,4 \alpha+3)\) \(\Rightarrow \lambda+3=7 \alpha-5\) \(3 \lambda-1=-6 \alpha+2\) \(\Rightarrow \alpha=1, \lambda=-1\) Point \(R\) is \((2,-4,7)\) Image of \(\mathrm{R}\) under…
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