3sin2x-3cosx+2sinx-1=0

Question

3sin2x-3cosx+2sinx-1=0

Answer 1

6sinxcosx-3cosx+2sinx-1=03cosx(2sinx-1)+2sinx-1=0(2sinx-1)(3cosx+1)=0sinx=1/2x=П/6+2Пk           -11П/6x=5П/6+2Пk         -7П/6cosx=-1/3 sinx=sqrt(8)/3x=arcsin(sqrt(8)/3 )+2Пk-Пx=-arcsin(sqrt(8)/3 )+2Пk+П x=-arcsin(sqrt(8)/3 )-П
Вроде так.