Unit circle notation of sine and cos waveforms

[electronicsman]

I see lot of books representing the sine and cosine waveforms in terms of unit circle notation. Is there is any particular advantage doing this? I hope this unit circle representation is different from phasor notation or both of them same?

 

[c_mitra]

I hope this unit circle representation is different from phasor notation or both of them same?

They are different notation but represent the same underlying process. The projection on the x-axis is the sine curve and the the projection on the y-axis is the cosine curve. The unit vector rotates at the same frequency. what kind of differences you are expecting?

 

[FvM]

You get an unit circle by plotting \( s(t) = e^{j\phi(t)} \) in the complex plane.

 

[LvW]

Descartes:
The more extensive and diverse the approaches to understand (or model/abstract) a concept are, and the more time a person spends thinking about these different aspects and approaches of the concept, the more likely he or she will be able to gain new insights through creative thinking.

 

[wwfeldman]

The projection on the x-axis is the sine curve and the the projection on the y-axis is the cosine curve. The unit vector rotates at the same frequency. what kind of differences you are expecting?

i thought projection on x axis is cosine and projection on y axis is sin?

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