Решите уравнение. sinx+sin(n+x)-2cos(n/2-x)=1
Sin(π+x) = -sinx cos(π/2 - x) = sinx sinx - sinx - 2sinx = 1 sinx = -1/2 x = -π/6 + 2πk, k∈Z x = -5π/6 + 2πk, k∈Z