sin2xcosП/6+sinП/6cos2x=cosx+(cosxcosП/6-sinxsinП/6)sinx
√3sinxcosx+cos2x/2=cosx+sinxcosx√3/2-sin^2x/2
(√3/2)sinxcosx+(cos2x+sin^2x)/2=cosx
(√3/2)sinxcosx+cos^2x/2=cosx
cosx=0 x=П/2+Пk ;x1= -7/2П x2=-9/2П
sin(x+П/6)=1
x+П/6=П/2+2Пk
x=П/3+2Пk
k=-2 x3=П/3-4П=-11П/3
sin2xcosП/6+sinП/6cos2x=cosx+(cosxcosП/6-sinxsinП/6)sinx
√3sinxcosx+cos2x/2=cosx+sinxcosx√3/2-sin^2x/2
(√3/2)sinxcosx+(cos2x+sin^2x)/2=cosx
(√3/2)sinxcosx+cos^2x/2=cosx
cosx=0 x=П/2+Пk ;x1= -7/2П x2=-9/2П
sin(x+П/6)=1
x+П/6=П/2+2Пk
x=П/3+2Пk
k=-2 x3=П/3-4П=-11П/3