The teacher will be very surprised to see your correct solution 😉
/pi*x\ ___ tan|----| = \/ 1 \ 6 /
sum
3/2
=
3/2
product
3/2
=
3/2
3/2
x1 = -34.5
x2 = 37.5
x3 = -28.5
x4 = 1.5
x5 = 79.5
x6 = -4.5
x7 = 49.5
x8 = 97.5
x9 = -64.5
x10 = 103.5
x11 = 73.5
x12 = -22.5
x13 = 19.5
x14 = 91.5
x15 = 67.5
x16 = 7.5
x17 = -46.5
x18 = -58.5
x19 = -94.5
x20 = -100.5
x21 = 43.5
x22 = 13.5
x23 = 61.5
x24 = 31.5
x25 = -70.5
x26 = 55.5
x27 = 25.5
x28 = 85.5
x29 = -82.5
x30 = -52.5
x31 = -10.5
x32 = -16.5
x33 = -88.5
x34 = -40.5
x35 = -76.5
x35 = -76.5