The trigonometric circle and its fundamental properties form the basis for understanding Fonction sinus et cosinus dans la trigonométrie. This comprehensive guide explores the unit circle, trigonometric functions, and Valeurs remarquables des angles en radians.
- The unit circle (cercle trigonométrique) has a radius of 1 unit and is used to define trigonometric functions
- Sine and cosine functions have specific properties including periodicity and domain restrictions (-1 ≤ sin(x) ≤ 1 and -1 ≤ cos(x) ≤ 1)
- Notable angle values in both degrees and radians are essential for trigonometric calculations
- The relationship between sine and cosine follows the fundamental identity sin²(x) + cos²(x) = 1
- Both functions exhibit specific symmetry properties: cosine is even while sine is odd