AP EAMCET · Maths · Three Dimensional Geometry
If the plane \(x-y+z+4=0\) divides the line joining the points \(\mathrm{P}(2,3,-1)\) and \(\mathrm{Q}(1,4,-2)\) in the ratio \(l: m\), then \(l+m\) is
- A 1
- B 3
- C -1
- D 4
Answer & Solution
Correct Answer
(B) 3
Step-by-step Solution
Detailed explanation
Perpendicular distance of point \(P(2,3,-1)\) from \(x-y+z+4=0\) is \(l=\left|\begin{array}{c} \frac{2-3-1+4}{\sqrt{3}} \end{array}\right|=\frac{2}{\sqrt{3}}\) Perpendicular distance of the point \((1,4,-2)\) from plane…
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