Two vectors and act along the -axis

MATHEMATICS · Subjective · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

Two vectors

\vec A = 5\,\hat i

and

\vec B = -3\,\hat i

act along the

x

-axis. Calculate

\vec A \times \vec B

and briefly state why its magnitude has this value.