+129839 8cos(x)sin(x)−2ctg(x)csc2(x)=0
8cosxsinx - 2 [ cosx/ sinx] * [ 1/ sin2x] = 0
8 sinxcosx] - 2 [cosx / sinx] * [ 1/ (2sinxcosx)] = 0
8 sinxcosx - 1/ sin^2x = 0
8sin^3xcosx - 1 = 0
Here's a graph of the solutions : https://www.desmos.com/calculator/soaaiu3gmp
They occur at about 31.87° + n* 180° and at about 82.64° + n * 180° where n is an integer
