SinX — cos X=1 — tg X

sin (x) — cos (x)=1 — tg (x) sin (x) — cos (x)=1 — sin (x) /cos (x) sin (x)*cos (x) — (cos (x) ^2=cos (x) -sin (x) sin (x)*cos (x) — (cos (x) ^2-cos (x)+sin (x)=0sin (x)*cos (x)+1) -cos (x)*(cos (x)+1)=0 (cos (x)+1)*(sin (x) -cos (x)=0a) cos (x)+1=0cos (x)=-1x=pi+2*pi*nб) sin (x) -cos (x)=0sin (x)=cos (x) sin (x) /cos (x)=cos (x) /cos (x) tg (x)=1x=pi/4+pi*n