Torque as a vector quantity

There are other ways of computing and expressing the cross product of two vectors. For example, given two vectors A and B in the standard unit-vector notation

one can combine the components of the two vectors to form the cross product A x B like so:

One way to remember this particular arrangement is to consider the cross product as a determinant (see Appendix E of your physics text):

We are interested in one particular cross product:

Note several things: