Merge pull request #1867 from akohlmey/doc-convert-to-mathjax

\documentclass[12pt]{article}

\pagestyle{empty}

\begin{document}

$$

  E_{a} = K_2\left(\theta - \theta_0\right)^2 + K_3\left(\theta - \theta_0\right)^3 + K_4\left(\theta - \theta_0\right)^4 + K_5\left(\theta - \theta_0\right)^5 + K_6\left(\theta - \theta_0\right)^6

$$

\end{document}

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\documentclass[12pt]{article}

\begin{document}

\begin{eqnarray*}

a &=& {\rm lx} \\

b^2 &=&  {\rm ly}^2 +  {\rm xy}^2 \\

c^2 &=&  {\rm lz}^2 +  {\rm xz}^2 +  {\rm yz}^2 \\

\cos{\alpha} &=& \frac{{\rm xy}*{\rm xz} + {\rm ly}*{\rm yz}}{b*c} \\

\cos{\beta} &=& \frac{\rm xz}{c} \\

\cos{\gamma} &=& \frac{\rm xy}{b} \\

\end{eqnarray*}

\end{document}