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i) Let bara, barb and barc be non - copl...

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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