Proof of Compound Angle Identity sin(x+y)

Описание к видео Proof of Compound Angle Identity sin(x+y)

**At about 6:45 I say "opposite over adjacent" when I meant "opposite over hypotenuse". Sorry about that!

This video is a geometric proof of the Compound Angle identity sin(x+y) = sinx cosy + cosx siny. It is step by step, and requires only knowledge of basic trigonometry and algebra fundamentals to understand.

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