Points and vectors

In the picture, there are indicated vectors $\vec{u}$ and $\vec{v}$ in three squares. Find the measure of an angle $\varphi$ between $\vec{u}$ and $\vec{v}$. Round $\varphi$ to the nearest degree. Hint: Set up a coordinate system conveniently.

Choose the perpendicular vector to the vector \( (-4; 8)\).

Choose the parallel vector to the vector \((4; 2)\).

Find the point that is obtained by translating the point \([-2; 1]\) by two times the vector \( (-2; 3) \).