Катя 2sin(x)cos(x) - cos(x) = 0 cos(x)(2sin(x) - 1) = 0 cos(x) = 0 x1 = p/2 + pk 2sin(x) - 1 = 0 sin(x) = 1/2 x2 = (-1)^k p/6 + pk, k E Z