text 9 find the unit vector perpendicular to the plane determined by t
Question
\text { 9. Find the unit vector perpendicular to the plane determined by the vectors } \vec{r}_{1}=2 \hat{\imath}+\hat{k} \text { and } \vec{r}_{2}=3 \hat{\imath}-1 \hat{\jmath}+2 \hat{k} ?
