Update cheatsheet.fr.md

12.temporary_ins/07.geometry-coordinates-prop2/40.n4/20.overview/cheatsheet.fr.md

@@ -96,7 +96,7 @@ $`u_1\,v^1\,+\, u_2\,v^2\,= u\,v\,\dfrac{1}{\cos(a)} \,\left[\cos(a)\cos(\alpha)
 \,+\,\cos(a)\,\sin(\alpha)\,\cos(\alpha)\,\sin(\theta)
 \,+\,\cos(a)\,\sin^2(\alpha)\,\cos(\theta)\right]`$
 
-On a 
+De plus
 
 $`\cos(\theta + \alpha)=\cos(\theta)\,\cos(\alpha)\,-\,\sin(\theta)\,\sin(\alpha)`$
 
@@ -127,12 +127,12 @@ $`u_1\,v^1\,+\, u_2\,v^2\,= u\,v\,\dfrac{1}{\cos(a)} \,
 
 $`u_1\,v^1\,+\, u_2\,v^2\,= u\,v\,\dfrac{1}{\cos(a)} \,
 \left[\cos(a)\cos^2(\alpha)\cos(\theta)
-\,-\,\xcancel{\cos(a)\cos(\alpha)\sin(\theta)\,\sin(\alpha)}
+\,-\,\cancel{\cos(a)\cos(\alpha)\sin(\theta)\,\sin(\alpha)}
 \,-\,\sin(a)\sin(\alpha)\sin(\theta)\,\cos(\alpha)
 \,-\,\sin(a)\sin^2(\alpha)\,\cos(\theta)
 \,+\,\xcancel{\sin(a)\,\cos^2(\alpha)\,\sin(\theta)}
 \,+\,\sin(a)\,\cos(\alpha)\,\sin(\alpha)\,\cos(\theta)
-\,+\,\xcancel{\cos(a)\,\sin(\alpha)\,\cos(\alpha)\,\sin(\theta)}
+\,+\,\cancel{\cos(a)\,\sin(\alpha)\,\cos(\alpha)\,\sin(\theta)}
 \,+\,\cos(a)\,\sin^2(\alpha)\,\cos(\theta)\right]`$