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

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Q 2105778668.     The pair of lines whose direction cosines are given by the
equations `3l + m + 5n = 0`, `6mn - 2nl + 5 lm = 0`, are
A

parallel

B

perpendicular

C

inclined at `cos^(-1) (1/6)`

D

none of the above

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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