Unit Circle Calculator
Understanding the Unit Circle
The unit circle is a fundamental concept in trigonometry with a radius of 1 unit, centered at the origin (0,0). It helps visualize trigonometric functions and relationships.
Key Features:
- Radius = 1 unit
- Any point (x,y) on the circle corresponds to (cos θ, sin θ)
- Tangent is calculated as sin θ / cos θ
Common Angles
| Degrees | Radians | Point (x,y) |
|---|---|---|
| 0° | 0 | (1,0) |
| 90° | π/2 | (0,1) |
| 180° | π | (-1,0) |
| 270° | 3π/2 | (0,-1) |