diff --git a/Formelsammlung.pdf b/Formelsammlung.pdf
index 1fdaae5..df18cf5 100644
Binary files a/Formelsammlung.pdf and b/Formelsammlung.pdf differ
diff --git a/Formelsammlung.tex b/Formelsammlung.tex
index cefd833..6a22635 100644
--- a/Formelsammlung.tex
+++ b/Formelsammlung.tex
@@ -449,7 +449,7 @@ $a = 0, b = 0 $   & $\varphi = 0^\circ $    &       $\varphi = 0 $       \\
 	\end{align*}
 	\begin{align*}
 	{ z }_{ 1 }\cdot { z }_{ 2 } & =\left| { z }_{ 1 } \right| \left( \cos { \left( { \varphi  }_{ 1 } \right)  } +\sin { \left( { \varphi  }_{ 1 } \right)  } i \right) \cdot \left| { z }_{ 2 } \right| \left( \cos { \left( { \varphi  }_{ 2 } \right)  } \cdot \sin { \left( { \varphi  }_{ 2 } \right)  } i \right) \\ 
-	& =\left| { z }_{ 1 } \right| \cdot \left| { z }_{ 2 } \right| \left( \cos { \left( { \varphi  }_{ 1 } \right) \cdot \cos { \left( { \varphi  }_{ 2 } \right)  }  } +\sin { \left( { \varphi  }_{ 1 } \right)  } \cdot \sin { \left( { \varphi  }_{ 2 } \right)  } i \right)
+	& =\left| { z }_{ 1 } \right| \cdot \left| { z }_{ 2 } \right| \left( \cos { \left( { \varphi  }_{ 1 } + { \varphi  }_{ 2 } \right)  } +\sin { \left( { \varphi  }_{ 1 } + { \varphi  }_{ 2 } \right)  } i \right)
 	\end{align*}
 	
 \textbf{Division}