👤

1) sin x/3+cos x/3=0
2) 4sin x-3cos x=0
3) 5sin x+cos x=5
4) 2sin (patrat) x-sin x-1=0
5) cos (patrat) x-5cos x+6=0
6) tg (patrat) x-7tg x+12=0
7) 2cos (patrat) 5x+sin 5x+1=0