**Answer:**

The equation of line is:

$\overrightarrow{r}=(3\hat{i}+\hat{k})+\lambda (\hat{j}+\hat{k})$\vec{r}=(3 \hat{i}+\hat{k})+\lambda(\hat {j}+\hat{k})

Comparing with

.

The equation of plane is:

(2 \hat{i}-\hat{j}+2 \hat{k})=1\vec{r} \cdot \vec{n}=0\vec{n}=(2 \hat{i}-\hat{j}+2 \hat{k})\theta$ ‘ be the angle between line and plane