Find the unit vector which is paralleled to the addition of two vectors \(\overrightarrow{r_1}\) = \(3\vec{i}-2\vec{j}\) and \(\overrightarrow{r_2}\) = – \(4\vec{i}+4\vec{j}\)
1
1/5\((-\vec{i}-2\vec{j})\)
2
1/5 \((\vec{i}-2\vec{j})\)
3
\(1/\sqrt5(-\vec{i}+2\vec{j})\)
4
\(1/\sqrt5(\vec{i}+2\vec{j})\)