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Radian
01
radian
a unit for measuring angles, defined by the angle made when the radius of a circle is laid along its edge
Exemple
Trigonometric functions involving angles in radians often yield results containing multiples of pi.
In geometry, the area of a sector of a circle is determined by the formula A = 0.5 * r² * θ, where θ is the angle in radians, often involving pi.
