Question
A . B=0 & A.C=0 , then how it will be proved that A is parallel to B x C ?? (here A,B,C are vectors, Ok)
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LET A BE IN X-PLANE
AS A.B=0 => COS K=90* (WHERE K=ANGLE BETWEEN A &B IN ANY PLANE LET Y-PLANE)
ALSO A.C=0 => COS L=90* (WHERE L=ANGLE BETWEEN A &L IN Z- PLANE )
S0, B X C= n^ (where n^ is perpendicular to y-z plane i.e x axis)
hence A II n^
AMAN 11 year ago
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