This video will give you an introduction to the Pythagorean Identities like sin^2(x) + cos^2(x) = 1. Also included in this video is a brief proof why it works, and how they are all connected. Watch near the end for a couple of examples on using these identities. For more videos please visit http://www.mysecretmathtutor.com
Tagged under: math,precalculus,pythagorean identity,simplify,trigonometry
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