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If vec(a) is a unit vector such that (ve...

If `vec(a)` is a unit vector such that `(vec(x) - vec(a)).(vec(x) + vec(a)) = 8` find `|vec(x)|`.

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Knowledge Check

  • If vec(a), vec(b), vec(c ) are unit vectors such that vec(a) + vec(b) + vec(c )= vec(0), " then " vec(a).vec(b) + vec(b).vec(c ) + vec(c ).vec(a) =

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    If two vectors vec(a) and vec(b) such that |vec(a)| = 2|vec(b)| = 3 and vec(a).vec(b) = 6 , find |vec(a)-vec(b)| .

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