sin2x + 5(cosx + sinx + 1) = 0

x1 = 199.491133503000x2 = -1599.07066068000x3 = 1399.57952717000x4 = 801.106126665000x5 = 2001.19452034000x6 = 400.553063333000x7 = -1800.13259051000x8 = 1600.64145700000x9 = -1000.59726017000x10 = -1999.62372401000x11 = -190.066355542000x12 = 600.044196836000x13 = -1.57079632679000x14 = 1198.51759734000x15 = 1800.13259051000x16 = -600.044196836000x17 = -398.982267006000x18 = -799.535330339000x19 = -1398.00873085000x20 = 1003.73885282000x21 = -1201.65919000000