Generelle regneregler
| $\sin^2{A}+\cos^2{A}=1$ |
| $\sec^2{A}-\tan^2{A}=1$ |
| $\csc^2{A}-\cot^2{A}=1$ |
| $\sin{-A}=-\sin{A}$ |
| $\cos{-A}=\cos{A}$ |
| $\tan{-A}=-\tan{A}$ |
| $\csc{-A}=-\csc{A}$ |
| $\sec{-A}=\sec{A}$ |
| $\cot{-A}=-\cot{A}$ |
| $\tan{A}=\frac{\sin{A}}{\cos{A}}$ |
| $\cot{A}=\frac{1}{\tan{A}}=\frac{cos{A}}{sin{A}}$ |
| $\sec{A}=\frac{1}{\cos{A}}$ |
| $\csc{A}=\frac{1}{sin{A}}$ |
