Значения для некоторых углов
| α | 0° (0 рад) | 30° (π/6) | 45° (π/4) | 60° (π/3) | 90° (π/2) | 180° (π) | 270° (3π/2) | 360° (2π) |
| sin α | 0 | | 1 | 0 | -1 | 0 | ||
| cos α | 1 | | | 0 | -1 | 0 | 1 | |
| tg α | 0 | | 1 | | | 0 | | 0 |
| ctg α | | | 1 | | 0 | | 0 | |
| sec α | 1 | | | 2 | | -1 | | 1 |
| cosec α | 2 | | | 2 | | -1 | |