The angle between the lines $\overline{\mathrm{r}}=(2 \hat{\imath}+\hat{\jmath}-3…
The angle between the lines $\overline{\mathrm{r}}=(2 \hat{\imath}+\hat{\jmath}-3 \hat{k})+\lambda(\hat{\imath}-\hat{\jmath}+\hat{k})$ and $\frac{x-1}{1}=\frac{y+2}{3}=\frac{\mathrm{z}-3}{2}$
is