TeX Quellcode:

\begin{array}{rclcl} \sin(\alpha) &=& \dfrac{a}{c} & \vert & \cdot c \cr c\cdot \sin(\alpha) &=& a & \vert & : \sin(\alpha) \cr c &=& \dfrac{a}{\sin(\alpha)} \cr c &=& \dfrac{9{,}3}{\sin(54^{\circ})} \cr c & \approx & 11{,}50 \, cm \end{array}