Cosine Calculator
Conversion Table
| Input | Unit | Cosine |
|---|---|---|
| 0 | degrees | 1 |
| 15 | degrees | 0.965926 |
| 30 | degrees | 0.866025 |
| 45 | degrees | 0.707107 |
| 60 | degrees | 0.5 |
| 75 | degrees | 0.258819 |
| 90 | degrees | 0 |
| 120 | degrees | -0.5 |
| 180 | degrees | -1 |
| 360 | degrees | 1 |
How This Converter Works
Calculates cosine for an input angle, in degrees by default or radians when selected. Degree input is converted to radians and Math.cos is applied. The output is formatted to exactly 12 decimal places; there is no explicit input validation.
Formula or rule
cos(angleRadians), where angleRadians = angle * pi / 180 for degree input and angle otherwise
Example
- Input
- 60 degrees
- Calculation
- cos(60 * pi / 180)
- Result
- 0.500000000000