Search any question & find its solution
Question:
Answered & Verified by Expert
If $l, m, n$ are the d.c's of a normal to the plane passing through the points $(0,1,2),(3,0,2),(4,5,0)$ then $|l|+|m|+|n|=$
Options:
Solution:
1977 Upvotes
Verified Answer
The correct answer is:
$\frac{12}{\sqrt{74}}$
The plane passing through points $(0,1,2)(3,0,2)$, $(4,5,0)$ can be given as $2 x+6 y+16 z-38=0$
Now $|1|+|\mathrm{m}|+|\mathrm{n}|=\frac{12}{\sqrt{74}}$
Now $|1|+|\mathrm{m}|+|\mathrm{n}|=\frac{12}{\sqrt{74}}$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.