\tdplotsetmaincoords{77}{-8}%
\begin{tikzpicture}[tdplot_main_coords]
x={(2 cm, 2 cm)},%
y={(2 cm, 2 cm)},%
z={(2 cm, 2 cm)}%
]%
\draw [->] (0,0,0) -- (1,0,0) node[below] {$x_1$};%
\draw [->] (0,0,0) -- (0,0,1) node[left] {$x_2$};%
\draw [->] (0,0,0) -- (0,1,0) node[left] {$x_3$};%
\end{tikzpicture}%
Generated by dwww version 1.15 on Mon Jun 24 14:10:58 CEST 2024.