Срешением и ответом! 1. cos 3x = 0. 2. tg x/2 = -1. 3. ctg (-4x) = 1. 4. ctg (3x -π/6) = √3. 5. ctg (π/6 - 2x) = - √3

1. 3x=π/2+πn, n∈Z
     x=π/6+πn/3, n∈Z
2. x/2=-π/4+πn, n∈Z
    x=-π/2+2πn, n∈Z
3. -4x=π/4+πn, n∈Z
     x=-π/16+πn/4, n∈Z
4. 3x-π/6=π/6+πn, n∈Z
    3x=π/3+πn,  n∈Z
     x=π/9+πn/3, n∈Z
5. π/6-2x=π-π/6+πn
    -2x=2π/3+πn
     x=-π/3+πn/2, n∈Z