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`vec a, vec b, vec c` are three vectors such that `vec a + vec b + vec c = 0, |vec a| =1, |vec b| = 2, |vec c| =3`, then `vec a . vec b + vec b . vec c + vec c . vec a =`

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HIMALAYA PUBLICATION-VECTORS AND THEIR APPLICATIONS-QUESTION BANK
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  7. If vec u, vec nu, vec w be such that |vec u| =1, |vec nu| = 2, |vec w|...

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  8. Let veca,vecb and vec c be three non zero vectors such that no two o...

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  9. If vec a = i-k, vec b = i+j+(1-x)k and vec c = yi+xj+(1+x-y)k then [ve...

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