What Is a Sine Graph?

A sine curve or sine wave ( Sinusoid / Sine wave ) is a curve derived from a sine ratio in a mathematical trigonometric function. It is also a representative of analog signals, as opposed to square waves, which represent digital signals.

The sine curve can be expressed as y = Asin (x + ) + k, which is defined as the function y = Asin (x + ) + k in

The shape of a sine curve is like a perfect sea wave, which is formed by changing the sine proportion of the trigonometric function. ^[1]

(1) The sine function is a wavy line. When x R, it will intersect the x axis but not necessarily (0,0).

(2) in

The appearance and application of sine curves are very extensive and can often be seen in research and used in: ^[2]

• Signal processing for analog signals

• Simple harmonic motion

• Acoustic sound air vibration

• Vibration wave of musical instrument tuning fork

• Output of the frequency generator

• AC voltage changes

and many more.

Even other irregular and non-sinusoidal waves can be represented by a collection of sine waves with different periods and amplitudes. This type of technology that transforms complex bands into sine waves is called Fourier analysis.