# Griffiths (3rd Edition), Chapter 01, Problem 1.4 Solution

## Problem 1.4 The cross product

##### The problem asks you to
find the components of the unit vector perpendicular to the plane shown in given figure.
##### You should know about
the cross product of vectors and its property.

$\vec{A} \times \vec{B} = AB \sin \theta \ \hat{n}$