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

જો બિંદુ \(\left( {2,\alpha ,\beta } \right)\) એ સમતલ પર આવેલ છે કે જે બિંદુઓ \((3, 4, 2)\) અને  \((7, 0, 6)\) માંથી પસાર થાય અને સમતલ \(2x - 5y = 15\) ને લંબ હોય તો \({2\alpha  - 3\beta }\) મેળવો.

  1. A \(12\)
  2. B \(7\)
  3. C \(5\)
  4. D \(17\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(7\)

Step-by-step Solution

Detailed explanation

\(A(7,0,6)\) and \(B(3,4,2)\) \(\overrightarrow {{\rm{AB}}} = - 4\widehat {\rm{i}} + 4\widehat {\rm{j}} - 4\widehat {\rm{k}}\) Also \(2 \hat{i}-5 \hat{j}\) is parallel to the plane \(\Rightarrow\) Normal perpendicular to the required plane is \(\)\left| {\begin{array}{*{20}{c}}…
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