The pair of lines whose direction cosines are given by the equations \[3l+m+5n=0\] and \[6mn-2nl+5lm=0\] are

inclined at \[{{\cot }^{-1}}\left( \frac{1}{6} \right)\]

The pair of lines whose direction cosines are given by the equations \

1.	The pair of lines whose direction cosines are given by the equations \[3l+m+5n=0\] and \[6mn-2nl+5lm=0\] are
A.	parallel
B.	perpendicular
C.	inclined at \[{{\cot }^{-1}}\left( \frac{1}{6} \right)\]
D.	none of these
Answer» D. none of these

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The pair of lines whose direction cosines are given by the equations \[3l+m+5n=0\] and \[6mn-2nl+5lm=0\] are

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