# Cofunction Identities

## Reference > Algebra: Trigonometric Identities

 Description$$\sin{(\frac{\pi }{2}-x)}=\cos{x}$$ $$\cos{(\frac{\pi }{2}-x)}=\cot{x}$$ $$\tan{(\frac{\pi }{2}-x)}=\csc{x}$$ $$\cot{(\frac{\pi }{2}-x)}=\sin{x}$$ $$\sec{(\frac{\pi }{2}-x)}=\tan{x}$$ $$\csc{(\frac{\pi }{2}-x)}=\sec{x}$$