Sin(3x + 3) - cos(x - 1) = 0
Sin (3x +3) - Sin (π/2 - x + 1) = 0
2Sin (3x + 3 -π/2 +x -1)/2 Cos (3x + 3 + π/2 - x +1)/2 = 0
а)Sin (3x + 3 -π/2 +x -1)/2 = 0 или б) Cos (3x + 3 + π/2 - x +1)/2
Sin(4x +2 - π/2)/2=0 Cos (2x + π/2 +4)/2 = 0
- Sin (π/2 - 4x - 2)/2 =0 x + π/4 +2 = π/2 + πk, k∈Z
Sin( π/4 -2x -1) = 0 x = π/2 + πк - π/4 -2 ,к ∈Z
π/4 -2x -1 = πn< n∈Z x = π/4 +πк - 2 , к∈Z
-2x = πn - π/4 +1 , n ∈Z
x = -πn/2 + π/8 -1/2 , n ∈Z