. A, B, and C are three non-collinear, non co-planar vectors. What can you say about direction of A(B×C)?
The direction of vector (B×C) will be perpendicular to the plane containing by vectors B and C by Right- hand thumb or Right- hand grip rule (RHGR) The direction of the vector A×(B×C) will be perpendicular to A and in a plane containing B andC by Right- hand grip rule.