Commit d644d537 authored by Claude Meny's avatar Claude Meny

Update cheatsheet.fr.md

parent a2ea4802
Pipeline #22802 canceled with stage
......@@ -140,11 +140,19 @@ avec la notion de fonction
![](https://m3p2.com/fr/temporary-m3p2/mathematics/algebra-analysis/n2/images/cos-a-plus-b_3_L1200.gif)
![](https://m3p2.com/fr/temporary-m3p2/mathematics/algebra-analysis/n2/images/cos-a-plus-b_4_L1200.gif)
$`\vec{OM}=cos (a+b)\;\vec{e_x}\;\,+\;sin(a+b)\;\vec{e_y}`$
![](https://m3p2.com/fr/temporary-m3p2/mathematics/algebra-analysis/n2/images/cos-a-plus-b_5_L1200.gif)
$`\vec{OM}=cos (a)\;\vec{e_x}\mathbf{'}\;\,+\;sin(a)\;\vec{e_y}\mathbf{'}`$
![](https://m3p2.com/fr/temporary-m3p2/mathematics/algebra-analysis/n2/images/cos-a-plus-b_6_L1200.gif)
$`\vec{e_x}\mathbf{'}\;=cos (a)\;\vec{e_x}\;\,+\;sin(a)\;\vec{e_y}`$
$`\vec{e_y}\mathbf{'}\;=-sin(a)\;\vec{e_x}\;\,+\;cos(a)\;\vec{e_y}`$
$`\begin{align}
\vec{OM}= & \quad cos (b)\;\vec{e_x}'\\
\;\,&
......
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