решить уравнение Cos(4x+π/3) = -1
4x+(π/3) =(–π)+2πk, k∈Z 4х=(–π)–(π/3)+2πk, k∈Z 4х=(–4π/3)+2πk, k∈Z х=(–π/3)+(π/2)k, k∈Z О т в е т. х=(–π/3)+(π/2)k, k∈Z