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Question
A, B and C are three non-collinear, non co-planar vectors. What can you say about direction of A × (B × C)?
Solution
The direction of product of vectors B and C is perpendicular to the plane that contains vectors B and C which is based on the Right-hand grip rule.
The direction of vector A(B × C) is perpendicular to vector A and is in the plane which contains vectors B and C and is again based on the Right-hand grip rule.
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