Angle between a line and a plane

The angle at which the line with equation $\tvec{r}(t) = 2\tvec{i} - \tvec{j} + 3\tvec{k} + t\left(\sqrt{2}\tvec{i} + \tvec{j} + \tvec{k}\right)$, $t \in \R$, intersects the plane with equation $\sqrt{2}\,x - y + z = 3$ is