sin(x+2π)=sinx\sin{(x+2\pi )}=\sin{x}sin(x+2π)=sinx
cos(x+2π)=cosx\cos{(x+2\pi )}=\cos{x}cos(x+2π)=cosx
tan(x+π)=tanx\tan{(x+\pi )}=\tan{x}tan(x+π)=tanx
csc(x+2π)=cscx\csc{(x+2\pi )}=\csc{x}csc(x+2π)=cscx
sec(x+2π)=secx\sec{(x+2\pi )}=\sec{x}sec(x+2π)=secx
cot(x+π)=cotx\cot{(x+\pi )}=\cot{x}cot(x+π)=cotx