Trigonometry lesson 9 - Definition of sine and cosine using the unit circle

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Australia Magic Monk
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Published on ● Video Link: https://www.youtube.com/watch?v=zQV5oON_GF8


Duration: 11:14
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In this lesson, we talk about why it is that, for any point on the unit circle, x=cos(theta) and y=sin(theta).



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Tags:
unit circle tutorial
trigonometry tutorial
periodic function tutorial