Mathematics, Q)Direction cosines of 2 lines are connected by the relation:-al+bm+cn=0 & fmn+gnl+hlm=0.Find the co

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Title: Mathematics

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Posted On: Jan 29, 2012 03:07 AM

Q)Direction cosines of 2 lines are connected by the relation:-al+bm+cn=0 & fmn+gnl+hlm=0.Find the condition that these 2 lines will be (a)perpendicular (b)parellel

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Devesh Lall
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