| Measurement A | 0° | 30° | 45° | 60° | 90° | |
|---|---|---|---|---|---|---|
| Sin A | 0 | 1/2 | 1/√2 | √3/2 | 1 | Remember |
| Cos A | 1 | √3/2 | 1/√2 | 1/2 | 0 | Reverse Sin A |
| Tan A | 0 | 1/√3 | 1 | √3 | Not Defined | SinA/Cos A |
| Cot A | Not Defined | √3 | 1 | 1/√3 | 0 | Reverse Tan A |
| Sec A | 1 | 2/√3 | √2 | 2 | Not Defined | Opposit Cos A |
| Cosec A | Not Defined | 2 | √2 | 2/√3 | 1 | Reverse Sec A |