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

यदि रेखाएँ \(\quad \frac{ x - k }{1}=\frac{ y -2}{2}=\frac{ z -3}{3}\) तथा \(\frac{ x +1}{3}=\frac{ y +2}{2}=\frac{ z +3}{1}\) समतलीय हैं, तो \(k\) का मान है

  1. A \(5\)
  2. B \(4\)
  3. C \(1\)
  4. D \(2\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(1\)

Step-by-step Solution

Detailed explanation

\(\left|\begin{array}{ccc}k+1 & 4 & 6 \\ 1 & 2 & 3 \\ 3 & 2 & 1\end{array}\right|=0\) \(\{\therefore\) Shortest distance between then is zero \(\}\) \((k+1)[2-6]-4[1-9]+6[2-6]=0\) \(\mathrm{~K}=1\)
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