The unit circle (Circonferenza goniometrica) is a fundamental tool for understanding trigonometric functions and angle measurements. This comprehensive guide explores the relationships between degrees and radians, seno e coseno formule, and their applications.
- The unit circle has a radius of 1 and is centered at the origin (0,0)
- Key angles (0°, 30°, 45°, 60°, 90°) and their corresponding radian measures are explored
- Trigonometric ratios (seno e coseno tabella) are derived from right triangle relationships
- The four quadrants demonstrate how signs of trigonometric functions change
- Fundamental identities like cos²(x) + sin²(x) = 1 are explained