TeX Quellcode:

\begin{array}{rclcc} a^2+b^2 &=& c^2 & \vert & -a^2 \cr b^2 &=& c^2-a^2 & \vert & \sqrt{} \cr b &=& \sqrt{c^2-a^2} \cr &=& \sqrt{6{,}1^2-3{,}4^2} \cr & \approx & 5{,}06 \, cm \end{array}