答案1
\documentclass[tikz,border=3mm]{standalone}
\begin{document}
\begin{tikzpicture}[>=stealth,
scale=0.5,
line cap=round,
]
\path (0,0) coordinate[label=left:{O}] (O)
(3,2) node[label=right:{V}](A){}
(6,-4) node[label=right:{W}](B){}
(O) edge[thick,->] (A) edge[thick,->] (B);
\end{tikzpicture}
\end{document}