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

रेखाओं \(\frac{ x -1}{0}=\frac{ y +1}{-1}=\frac{ z }{1}\) तथा \(x + y + z +1=0,2 x\) \(- y + z +3=0\) के बीच की न्यूनतम दूरी है 

  1. A \(\frac{1}{2}\)
  2. B \(1\)
  3. C \(\frac{1}{\sqrt{2}}\)
  4. D \(\frac{1}{\sqrt{3}}\)
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Answer & Solution

Correct Answer

(D) \(\frac{1}{\sqrt{3}}\)

Step-by-step Solution

Detailed explanation

Line of intersection of planes \(x+y+z+1=0\) \(2 x-y+z+3=0\) eliminate y \(3 x+2 z+4=0\) \(x=\frac{-2 z-4}{3}\) put in equaiton (1) \(z=-3 y+1\) from (3) and (4) \(\frac{3 x+4}{-2}=-3 y+1=z\)…
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