АР Алексей Рудик 1) = sin(2x+x) = sin 3x = 0 3x = pi*k x = pi*k/3 2) tg(2x+pi/2) = - ctg(2x) = -1 ctg 2x = 1 2x = pi/4 + pi*k x = pi/8 + pi*k/2