TeX Quellcode:
\begin{array}{rclcl} \tan(\alpha) &=& \dfrac{a}{b} & \vert & \cdot b \cr a &=& b \cdot \tan(\alpha) \cr a &\approx& 3 \cdot \tan(1{,}16) \cr a & \approx & 6{,}87 \, cm \end{array}