| θ in degrees | θ in radians | sin(θ) | cos(θ) |
|---|---|---|---|
| 0° | 0 | 0 | 1 |
| 15° | π/12 | √6 - √2/4 | √6 + √2/4 |
| 30° | π/6 | 1/2 | √3/2 |
| 36° | π/5 | √10 - 2√5/4 | √5 - 1/4 |
| 45° | π/4 | √2/2 | √2/2 |
| 60° | π/3 | √3/2 | 1/2 |
| 90° | π/2 | 1 | 0 |
| 180° | π | 0 | -1 |
| 270° | 3π/2 | -1 | 0 |
| 360° | 2π | 0 | 1 |
| a + b | a + b | sin(a) cos(b) + cos(a) sin(b) | cos(a) cos(b) - sin(a) sin(b) |
| a - b | a - b | sin(a) cos(b) - cos(a) sin(b) | cos(a) cos(b) + sin(a) sin(b) |
| -a | -a | -sin(a) | cos(a) |
| 90 - a | π/2 - a | cos(a) | sin(a) |
