Question

What is the angle between A.B and BxA?

Answer 1

Answer:

The angle would need to be 180 or 0 degrees.

If AxB = BxA, then BxA = -(BxA), so AxB = 0.

This only happens if the angle between A and B is 180 or 0 degrees or if A or B is the 0 vector, but then talking about angles between the vectors is meaningless.

Answer 2

Answer:

Cannot be determined

Explanation:

Property of cross product [Vector product]

1) The Cross product of two  vectors will give a Vector Quantity

2)The Cross Product of two vectors will always be perpendicular to the plane in which the two vectors lie (i.e. Vector A and B)

Property of dot product [Scalar Product]

1) The dot product of two vectors will be a scalar quantity

Since a scalar quantity has only magnitude and no direction, hence the angle between a scalar quantity and a vector quantity cannot be found.