If bara,barb,barc are unit coplanar vect...

If `bara,barb,barc` are unit coplanar vectors, then find `[ 2bara-barb 2barb-barc 2barc -bara]`.

`-sqrt3`

`sqrt3`

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AAKASH SERIES-MULTIPLE PRODUCT OF VECTORS-EXERCISE-I

barc.(barb+barc)xx(bara+barb+barc)=
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