-1.6 2.1 setxrange
-1.6 2 setyrange
60 setxunit
90 setangle_repere

traceaxes
axesarrow
 
/O{0 0} def
/cerc{O 1} def
cerc cercle

/X {45 cerc cpoint} def
/Y {120 cerc cpoint} def
/Z {240 cerc cpoint} def
/T {315 cerc cpoint} def


gsave
pointilles
[-0.5 -1.5 -0.5 1.5] ligne
[0.70711 -1.5 0.70711 1.5] ligne
grestore

<latex>
$u$
</latex>
2.05 0 [1.4 dup] dltexlabel

<latex>
$v$
</latex>
0 1.9 [1.4 dup] crtexlabel

<latex>
$-\frac{1}{2}$
</latex>
-0.5 0 [1.1 dup] dltexlabel

<latex>
$\frac{\sqrt{2}}{2}$
</latex>
0.69 0 [1.1 dup] dltexlabel

<latex>
$\frac{\pi}{4}$
</latex>
X [1.6 dup] urtexlabel

<latex>
$\frac{2\pi}{3}$
</latex>
Y [1.6 dup] ultexlabel

<latex>
$\frac{4\pi}{3}$
</latex>
Z [1.6 dup] dltexlabel

<latex>
$\frac{7\pi}{4}$
</latex>
T [1.6 dup] drtexlabel

[-0.5 0 0.70711 0] points

gsave
4.2 setlinewidth
45 120 cerc Cercle
240 315 cerc Cercle
grestore


/dotscale {2.0 dup} def
gsave
[X Y Z T] {point} plot
grestore