The Unit Circle Calculator provides an interactive visualisation of the unit circle with exact trigonometric values for any angle. Click on common angles to see their sine, cosine, and tangent values, or enter any angle to compute all six trig functions.
The calculator supports four modes: an interactive SVG unit circle, angle-to-trig-value lookup with exact values, reference angle calculation, and a degree-radian converter with exact fractions of pi.
| Deg | Rad | sin | cos | tan |
|---|---|---|---|---|
| 0 | 0 | 1 | 0 | |
| 30 | 0.5 | 0.8660254 | 0.57735027 | |
| 45 | 0.70710678 | 0.70710678 | 1 | |
| 60 | 0.8660254 | 0.5 | 1.73205081 | |
| 90 | 1 | 0 | undef | |
| 120 | 0.8660254 | -0.5 | -1.73205081 | |
| 135 | 0.70710678 | -0.70710678 | -1 | |
| 150 | 0.5 | -0.8660254 | -0.57735027 | |
| 180 | 0 | -1 | 0 | |
| 210 | -0.5 | -0.8660254 | 0.57735027 | |
| 225 | -0.70710678 | -0.70710678 | 1 | |
| 240 | -0.8660254 | -0.5 | 1.73205081 | |
| 270 | -1 | 0 | undef | |
| 300 | -0.8660254 | 0.5 | -1.73205081 | |
| 315 | -0.70710678 | 0.70710678 | -1 | |
| 330 | -0.5 | 0.8660254 | -0.57735027 |
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