Solution
= Solution
The <Euclidean norm> of each position <vector> gives
$$
\boxed{|OA|=\sqrt{3^2+4^2}=5,\qquad |OB|=\sqrt{5^2+12^2}=13.}
$$
= Solution
The <Euclidean norm> of each position <vector> gives
$$
\boxed{|OA|=\sqrt{3^2+4^2}=5,\qquad |OB|=\sqrt{5^2+12^2}=13.}
$$