- The definition of a sine curve is a graphic representation of the sine function.
An example of a sine curve is a drawing on a piece of graph paper that shows the equation y=sin x.
a graphic representation of the sine function; specif., the graph of y = sin x, with x denoting radian measure of an angle periodically changing from 0° to 360°
The graph of the equation y = asin bx, where a and b are constants. Also called sinusoid.
The equation for this sine curve is
y = sin x.