TeX Quellcode:

\begin{array}{rclcc}c^2 &=& a^2+b^2 &\vert &-b^2\\a^2 &=& c^2-b^2 &\vert &\sqrt{}\\a &=& \sqrt{c^2-b^2}\\&=& \sqrt{753^2-456^2}\\&\approx & 599{,}23\, cm\end{array}