2 8 8 2 4 4 2 6 6 2
sin (x) cos (x) sin (x) cos (x) 35*cos (x)*sin (x) 7*cos (x)*sin (x) 7*cos (x)*sin (x)
- ------- - ------- - ------- + ------- - ------------------ + ----------------- + -----------------
4 16 16 4 8 4 4
$$- \frac{1}{16} \sin^{8}{\left (x \right )} + \frac{7}{4} \sin^{6}{\left (x \right )} \cos^{2}{\left (x \right )} - \frac{35}{8} \sin^{4}{\left (x \right )} \cos^{4}{\left (x \right )} + \frac{7}{4} \sin^{2}{\left (x \right )} \cos^{6}{\left (x \right )} - \frac{1}{4} \sin^{2}{\left (x \right )} - \frac{1}{16} \cos^{8}{\left (x \right )} + \frac{1}{4} \cos^{2}{\left (x \right )}$$