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If the d.c.'s (l, m, n) of two lines are connected by the relations l+m+n=0 " and " 2mn+3ln-5lm=0 then the angle between the lines is

Answer» <html><body><p>`pi//4`<br/>`pi//3`<br/>`pi//6`<br/>`pi//2`</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :D</body></html>


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