Найти tga,если 5sina+4cosa-2/5sina-2cosa-6=1/3;

(5sina+4cosa-2)/(5sina-2cosa-6)=1/3
3(5sina+4cosa-2)=5sina-2cosa-6
15sina-5sina=-2cosa-6-12cosa+6
10sina=-14cosa
sina=-1,4cosa
tga=sina/cosa=-1,4cosa/cosa=-1,4