Объяснение:
sin((x/4)-(π/6)=-√3/2
{(x/4)-(π/6))=-π/3+2πn {(x/4)-=-π/6+2πn |×4 {x₁=-2π/3+8πn.
{sin((x/4)-(π/6))=4π/3+2πn {x/4=9π/6+2πn |×4 {x₂=6π+8πn.
