Update cheatsheet.fr.md

12.temporary_ins/44.relativity/20.n2/10.an-euclidian-space-time/20.overview/cheatsheet.fr.md

@@ -937,12 +937,11 @@ choix des coordonnées xyt pour la prochiane figure
 <span style="font-family:'Times New Roman';font-weight:bold;font-size:1.15rem;color:#bbbbbb">appelé 
 </span><span style="font-family:'Times New Roman';font-weight:bold;font-size:1.15rem;left;color:#bb3300"> interval  s<sub>AB</sub><br>
 <span style="font-family:'Times New Roman';font-weight:bold;font-size:1.15rem;text-align:left;color:#bbbbbb">d'expression</span>
-<span style="font-family:'Times New Roman';font-weight:bold;font-size:0.85rem;text-align:right;color:#009933">en coordonnées cartésiennes</span></p>
-$`\color{green}{s_{AB}=\sqrt{(\Delta t_{AB})^2+(\Delta l_{AB})^2(y_B-y_A)^2+(z_B-z_A)^2}}`$
-<p style="font-family:'Times New Roman';font-weight:bold;font-size:0.85rem;text-align:right;color:#009933">avec, en coordonnées spatiales cartésiennes</p>
-$`Delta l_{AB}=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2+(z_B-z_A)^2}`$
-<p style="font-family:'Times New Roman';font-weight:bold;font-size:0.85rem;text-align:right;color:#009933">et</p>
-$`Delta l_{AB}=\sqrt{(t_B-t_A)^2}`$
+$`\color{green}{s_{AB}=\sqrt{(\Delta t_{AB})^2+(\Delta l_{AB})^2}}`$
+<p style="font-family:'Times New Roman';font-weight:bold;font-size:0.85rem;text-align:left;color:#bbbbbb"">avec, en coordonnées spatiales cartésiennes</p>
+$`\color{#bbbbbb}{\Delta l_{AB}=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2+(z_B-z_A)^2}}`$
+<p style="font-family:'Times New Roman';font-weight:bold;font-size:0.85rem;text-align:right;color:#bbbbbb">et</p>
+$`\color{#bbbbbb}{\Delta l_{AB}=|t_B-t_A|=\sqrt{(t_B-t_A)^2}}`$
 <hr width=100% size=6px border-style="solid" color=#00bb33>