1.

If bara, barb, barc are non-coplanar, non zero vectors then (baraxxbarb)xx(baraxxbarc)+(barb xxbarc)xx(barbxxbara)+ (barcxxbara)xx(barcxxbarb) =

Answer»

`[BARABARBBARC]^(2)(bara+barb+barc)`
`[barabarbbarc](bara+barb+barc)`
`BAR0`
0

Answer :B


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