ВБ
Влад Борщевский
незнаю
6cos(π-x) - 5cos(π/2 - 2x) + 2 = 0
6cos(x) - 5sin(2x) + 2 = 0
6 - 10tg(x) + 2 + 2tg(x) = 0
2tg(x) - 10tg(x) + 8 = 0
tg(x) = 1
tg(x) = 4
--> x = π/4 + πk, x = arctg(4)+πk