Тригонометрические уравнения
cos(3пи/4-2x)=-1
ctg(pi/6-x/2)=-1

1)cos(3π/4-2x)=-1sin(2x-π/4)=-12x-π/4=-π/4+2πn2x=2πnx=πn2)ctg(π/6-x/2)=-1tg(x/2+π/3)=-1x/2+π/3=-π/4+πnx=-7π/12+πn