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![[Post New]](/templates/default/images/icon_minipost_new.gif) 23 Apr 2008 10:57:03 IST
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Prove that the vectors A=2i^-3j^+k^ & B=i^+j^+k^ are mutually perpendicular.
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easy yaaar A vector . B vector will give 0,if they are mutually perpendicular
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23 Apr 2008 11:48:49 IST
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A.B=2-3+1=0 But, A.B=[A][B]cos  =0 So,cos =0(Since mod.A&B  0) Therefore =90 |
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