Ответы и объяснения

2013-02-23T17:49:40+04:00

y = 2π - x

cos(x) + cos(2π - x) = 1

2 * cos(x) = 1

cos(x) = 1/2

x = ±π/3 + 2*π*n

y = 2*π - (±π/3 + 2*π*n)