/ 2 2 2 2 \
| sin (x) 3*cos (x) 3*cos (x)*sin (x)|
|1 - ----------- + ----------- - -----------------|*sin(x)
| 2 2 2 |
| 1 - cos (x) 1 - cos (x) / 2 \ |
\ \1 - cos (x)/ /
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/ 2
\/ 1 - cos (x)