Radiansinx

Radiansinx denotes the sine function evaluated with its input measured in radians. In mathematics, the angle x is expressed in radians, the natural unit for angular measure, and sin(x) yields a dimensionless value between -1 and 1.

On the unit circle, sin(x) equals the y-coordinate of the point obtained by rotating from (1,0) by angle x radians. This provides an intuitive geometric interpretation for all real x.

Domain is all real numbers; range is [-1, 1]. The function is periodic with period 2π, meaning sin(x+2π) = sin(x). Its graph oscillates between -1 and 1 with zeros at integer multiples of π.

Key calculus properties include d/dx sin(x) = cos(x) and ∫ sin(x) dx = -cos(x) + C. The Taylor series converges for all x: sin(x) = x − x^3/3! + x^5/5! − ....

In practice, radians simplify formulas in trigonometry and calculus; many programming languages use radians by default. When angles are given in degrees, they must be converted to radians by x_rad = x_deg × π/180. Sine is widely used in physics, engineering, computer graphics, and signal processing due to its fundamental role in rotational motion and wave phenomena.