1) sin(3x - pi/4) = √2/23x - pi/4 = pi/4 + 2pi*n; 3x = pi/2 + 2pi*n; x1 = pi/6 + 2pi*n/33x - pi/4 = 3pi/4 + 2pi*n; 3x = pi + 2pi*n; x2 = pi/3 + 2pi*n/32) cos(2x + pi/6) = √3/22x + pi/6 = pi/6 + 2pi*n; 2x = 2pi*n; x1 = pi*n2x + pi/6 = 5pi/6 + 2pi*n; 2x = 4pi/6 + 2pi*n; x2 = pi/3 + pi*n3) tg(3x - pi/4) = 13x - pi/4 = pi/4 + pi*n; 3x = pi/2 + pi*n; x = pi/6 + pi*n/3