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

माना रेखा \(\frac{ x -2}{\alpha}=\frac{ y -2}{-5}=\frac{ z +2}{2}\), समतल \(x +3 y -2 z +\beta=0\) में स्थित है। तो \((\alpha+\beta)\) बराबर है

  1. A \(5\)
  2. B \(7\)
  3. C \(6\)
  4. D \(4\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(7\)

Step-by-step Solution

Detailed explanation

Point \((2,2,-2)\) also lies on given plane So \(2+3 \times 2-2(-2)+\beta=0\) \(\Rightarrow 2+6+4+\beta=0 \Rightarrow \beta=-12\) Also \(\alpha \times 1-5 \times 3+2 \times-2=0\) \(\Rightarrow \alpha-15-4=0 \Rightarrow \alpha=19\) \(\therefore \alpha+\beta=19-12=7\)
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app