Update cheatsheet.fr.md

12.temporary_ins/69.waves/30.n3/20.overview/cheatsheet.fr.md

@@ -1401,7 +1401,7 @@ $`\quad\;\, = (A_{moy}+ \Delta A_{1-2})\,cos\,\theta_1 + (A_{moy} - \Delta A_{1-
 <br>
 **$`\theta_1(\overrightarrow{r},t)`$**$`\; = \omega_1 t + \overrightarrow{k}_1\cdot\overrightarrow{r}+\varphi_1`$
 
-$`\begin{align}\quad\;\,= \big[ (\omega_{moy}&+ \Delta \omega_{1-2})\, t + \big(\overrightarrow{k}_{moy}+ \Delta \overrightarrow{k}_{1-2}\big)\cdot\overrightarrow{r}\\
+$`\begin{align}\quad\;\;= \big[ (\omega_{moy}&+ \Delta \omega_{1-2})\, t + \big(\overrightarrow{k}_{moy}+ \Delta \overrightarrow{k}_{1-2}\big)\cdot\overrightarrow{r}\\
 &+( \varphi_{moy} + \Delta \varphi_{1-2})\big]\end{align}`$
 
 $`\begin{align}
@@ -1409,15 +1409,15 @@ $`\begin{align}
 &\quad + \big(\underbrace{\Delta \omega_{1-2} t + \Delta \overrightarrow{k}_{1-2}\cdot\overrightarrow{r}+\Delta\varphi_{1-2}}_{\color{blue}{\theta_{1-2}(\overrightarrow{r},t)}}\big)\big]
 \end{align}`$
 
-**$`\quad\;\,=\,\theta_{moy}(\overrightarrow{r},t)\,+\,\theta_{1-2}(\overrightarrow{r},t)`$**   
+**$`\quad\;\;=\,\theta_{moy}(\overrightarrow{r},t)\,+\,\theta_{1-2}(\overrightarrow{r},t)`$**   
 <br>
-et de la même façon nous obtenons :   
+&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;et de la même façon nous obtenons :   
 <br>
-**$`\theta_1(\overrightarrow{r},t)`$**$`\; = \omega_2 t + \overrightarrow{k}_2\cdot\overrightarrow{r}+\varphi_2`$   
+**$`\quad\;\;\theta_1(\overrightarrow{r},t)`$**$`\; = \omega_2 t + \overrightarrow{k}_2\cdot\overrightarrow{r}+\varphi_2`$   
 <br>
-$`\quad \;\, = \cdots`$   
+$`\quad\quad \;\; = \cdots`$   
 <br>
-**$`\quad\;\,=\,\theta_{moy}(\overrightarrow{r},t)\,+\,\theta_{1-2}(\overrightarrow{r},t)`$**  
+**$`\quad\quad\;\;=\,\theta_{moy}(\overrightarrow{r},t)\,+\,\theta_{1-2}(\overrightarrow{r},t)`$**