/ 2 2 2 2 \
| 9*sin (x) 27*cos (x) 243*cos (x)*sin (x)|
3*|1 - ------------- + ------------- - -------------------|*sin(x)
| 2 2 2 |
| 1 - 9*cos (x) 1 - 9*cos (x) / 2 \ |
\ \1 - 9*cos (x)/ /
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_______________
/ 2
\/ 1 - 9*cos (x)
$$\frac{3 \sin{\left (x \right )}}{\sqrt{- 9 \cos^{2}{\left (x \right )} + 1}} \left(1 - \frac{9 \sin^{2}{\left (x \right )}}{- 9 \cos^{2}{\left (x \right )} + 1} + \frac{27 \cos^{2}{\left (x \right )}}{- 9 \cos^{2}{\left (x \right )} + 1} - \frac{243 \sin^{2}{\left (x \right )} \cos^{2}{\left (x \right )}}{\left(- 9 \cos^{2}{\left (x \right )} + 1\right)^{2}}\right)$$