sin(3x+π/6)=-√3/2
3x+π/6= -π/3+2πn
3x= - π/3 - π/6 + 2πn
3x= - 3π/6 + 2πn
3x= -π/2 +2πn
x= -π/6 + 2πn/3
sin(3x+π/6)=-√3/2
3x+π/6= -π/3+2πn
3x= - π/3 - π/6 + 2πn
3x= - 3π/6 + 2πn
3x= -π/2 +2πn
x= -π/6 + 2πn/3