An angle between the lines whose direction cosines are given by the eq – InterviewSolution

1.	An angle between the lines whose direction cosines are given by the equations, l+3m+5n=0 and 5lm−2mn+6nl=0, is :
Answer» An angle between the lines whose direction cosines are given by the equations, $l + 3 m + 5 n = 0$ and $5 l m - 2 m n + 6 n l = 0$ , is :

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