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vec A , vec B and vec C are three non-co...

` vec A , vec B and vec C` are three non-collinear, non co-planar vectors. What can you say about direction of ` vec A xx vec (B xx vec C`) ?

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` (vec Bxx vec C)` will act perpecndcular to the plane constaining ` vec B and vec C` and is derected as given by right hand rule. `(vec A xx (vec B xx vec C)` will lie in the plane of `vec B and vec C` and is perpwndicular to vector `vec A`.
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