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i) Let bara, barb and barc be non - coplanar vectors and baralpha=bara+2barb+3barc,barbeta=2bara+barb-2barc and bargamma=3bara-7barc, then find [baralphabarbetabargamma] (ii) If bara,barbbarc are non coplanar vectors, then find ((bara+2barb-barc).[(bara-barb)xx(bara-barb-barc)])/([barabarbbarc])

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