Помогите решить уровнения умоляю.

1. cosα= -1/2 α=(+/-) (2π/3) + 2πn, n∈Z 2. 2sinx-√2=0 sinx=√2/2 x=(-1)ⁿ (π/4) + πn, n∈Z 3. 2cosx+√3=0 cosx= - √3/2 x=(+/-) (5π/6) + 2πn, n∈Z 4. 2sin2x+1=0 sin2x= - 1/2 2x=(-1)ⁿ⁺¹ (π/6) + πn, n∈Z 5. 2cos(x - π/6) -√2=0 cos(x-π/6)=√2/2 x-π/6=(+/-) (π/4) + 2πn, n∈Z x=(+/-) (π/4) + (π/6) + 2πn, n∈Z 6. 2sin(x/2 - π/3) - √3=0 sin(x/2 - π/3) = √3/2 x/2 - π/3 = (-1)ⁿ (π/3) + πn x/2 = (-1)ⁿ (π/3) + (π/3) + πn x=(-1)ⁿ (2π/3) + (2π/3) + 2πn, n∈Z