Решите за спасибо (тригонометрия):sin((pi/3)+2x)+sin((pi/6)-2x) >=1
Sin(π/3+2x)+sin(π/6-2x)≥1 2*sinπ/4*cos(π/3+2x-π/6+2x)/2≥1 2*√2/2*cos(π/12+2x)≥1 cos(π/12+2x)≥√2/2 -π/4+2πk≤π/12+2x≤π/4+ 2πk -π/4-π/12+2πk≤2x≤π/4- π/12+2πk -π/3+2πk≤2x≤π/6+2πk -π/6+πk≤x≤π/12+πk