___________ ___________
/ ___ / ___ / ___\ / ___\
___________ ___ / 5 \/ 5 ___ / 5 \/ 5 ___ |1 \/ 5 | ___ |1 \/ 5 |
/ ___ \/ 2 * / - - ----- \/ 2 * / - + ----- \/ 2 *|- + -----| \/ 2 *|- - -----|
/ 5 \/ 5 \/ 8 8 \/ 8 8 \4 4 / \4 4 / /pi\ /pi\ / pi\ /2*pi\ /3*pi\ /3*pi\ /3*pi\ /4*pi\ /7*pi\ /7*pi\ /9*pi\ /9*pi\ /11*pi\ /13*pi\ /17*pi\ /19*pi\
/ - + ----- + ---------------------- + ---------------------- + ----------------- - ----------------- + cos|--| + cos|--| + cos|---| + cos|----| + cos|----| + cos|----| + cos|----| + cos|----| + cos|----| + cos|----| + cos|----| + cos|----| + cos|-----| + cos|-----| + cos|-----| + cos|-----|
\/ 8 8 2 2 2 2 \25/ \50/ \100/ \ 25 / \ 25 / \ 50 / \100 / \ 25 / \ 50 / \100 / \ 50 / \100 / \ 100 / \ 100 / \ 100 / \ 100 /
$$- \frac{\sqrt{2} \left(\frac{1}{4} - \frac{\sqrt{5}}{4}\right)}{2} + \frac{\sqrt{2} \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{2} + \frac{\sqrt{2} \left(\frac{1}{4} + \frac{\sqrt{5}}{4}\right)}{2} + \frac{\sqrt{2} \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{2} + \cos{\left(\frac{19 \pi}{100} \right)} + \cos{\left(\frac{9 \pi}{50} \right)} + \cos{\left(\frac{17 \pi}{100} \right)} + \cos{\left(\frac{4 \pi}{25} \right)} + \cos{\left(\frac{7 \pi}{50} \right)} + \cos{\left(\frac{13 \pi}{100} \right)} + \cos{\left(\frac{3 \pi}{25} \right)} + \cos{\left(\frac{11 \pi}{100} \right)} + \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}} + \cos{\left(\frac{9 \pi}{100} \right)} + \cos{\left(\frac{2 \pi}{25} \right)} + \cos{\left(\frac{7 \pi}{100} \right)} + \cos{\left(\frac{3 \pi}{50} \right)} + \cos{\left(\frac{\pi}{25} \right)} + \cos{\left(\frac{3 \pi}{100} \right)} + \cos{\left(\frac{\pi}{50} \right)} + \cos{\left(\frac{\pi}{100} \right)}$$
sqrt(5/8 + sqrt(5)/8) + sqrt(2)*sqrt(5/8 - sqrt(5)/8)/2 + sqrt(2)*sqrt(5/8 + sqrt(5)/8)/2 + sqrt(2)*(1/4 + sqrt(5)/4)/2 - sqrt(2)*(1/4 - sqrt(5)/4)/2 + cos(pi/25) + cos(pi/50) + cos(pi/100) + cos(2*pi/25) + cos(3*pi/25) + cos(3*pi/50) + cos(3*pi/100) + cos(4*pi/25) + cos(7*pi/50) + cos(7*pi/100) + cos(9*pi/50) + cos(9*pi/100) + cos(11*pi/100) + cos(13*pi/100) + cos(17*pi/100) + cos(19*pi/100)