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

बिंदु \((1,2,4)\) से होकर जाने वाली तथा रेखा \(x + y - z =0= x -2 y +3 z -5\) के समांतर रेखा की, बिंदु \((1,-2,5)\) से लंब की लंबाई है :

  1. A \(\sqrt{\frac{21}{2}}\)
  2. B \(\sqrt{\frac{9}{2}}\)
  3. C \(\sqrt{\frac{73}{2}}\)
  4. D \(1\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\sqrt{\frac{21}{2}}\)

Step-by-step Solution

Detailed explanation

\(d.r\)'s of the line \(=\left|\begin{array}{ccc}\hat{i} & \hat{j} & \hat{k} \\ 1 & 1 & -1 \\ 1 & -2 & 3\end{array}\right|=\hat{i}-4 \hat{j}-3 \hat{k}\) \(\therefore\) equation of line is…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app