3sin(x/2 + п/6)=3/2 разделим на 3 sin(x/2 + п/6) = 1/2 х/2 + п/6 = (-1)^k п/4 + пk x/2 = (-1)^k п/4 - п/6 + пk x=(-1)^k п/2 - п/3 + 2пk cos 2x =0 tgx = 0 2x = п/2 + пk x=пk x=п/4 + пk/2
