If the angle between the vectors A and B is θ, the value of the product vector (B x A). A is equal to
(a) BA2 sinθ
(b) BA2 cos θ
(c) BA2 sinθcosθ
(d) zero
Correct option (d) zero
Explanation:
Let vector A x B = C
The cross product of B and A is perpendicular to the plane containing ) A and B i.e. perpendicular to A . if a dot product of this cross product and A is taken, as the cross product is
