A)sinx=√3/2,x=(-1)^n*π/3+πn б)ctgx/3=1,x/3=π/4+πn,x=3π/4+3πn в)2x-π/3=π+2πn,2x=4/3π+2πn,x=2π/3+πn г)x=3π/4+πn д)x=arctg1/6+πn