JEE Main 2007 — Three Dimensional Geometry Question with Solution
JEE Main 2007
Question
Let be the line of intersection of the planes and . If makes an angles with the positive -axis, then equals
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
If direction cosines of be , , then
$\begin{aligned}
& 2 l+3 m+n=0 \\
& l+3 m+2 n=0
\end{aligned}$
Solving, we get,
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This is a previous-year question from JEE Main 2007, covering the Three Dimensional Geometry chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.