/ 2 2 2 2 \
| 2*sin (5*x) 6*cos (5*x) 8*cos (5*x)*sin (5*x)|
125*|-1 - ------------- + ------------- + ---------------------|*sin(5*x)
| 2 2 2 |
| 1 + cos (5*x) 1 + cos (5*x) / 2 \ |
\ \1 + cos (5*x)/ /
-------------------------------------------------------------------------
2
1 + cos (5*x)
$$\frac{125 \left(-1 - \frac{2 \sin^{2}{\left(5 x \right)}}{\cos^{2}{\left(5 x \right)} + 1} + \frac{6 \cos^{2}{\left(5 x \right)}}{\cos^{2}{\left(5 x \right)} + 1} + \frac{8 \sin^{2}{\left(5 x \right)} \cos^{2}{\left(5 x \right)}}{\left(\cos^{2}{\left(5 x \right)} + 1\right)^{2}}\right) \sin{\left(5 x \right)}}{\cos^{2}{\left(5 x \right)} + 1}$$