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Visit this link for access to videos that simplify every topic I teach throughout the year.
https://www.khanaca..of-trig-functions-1
First topic is The definition of sine, cosine, and tangent. Here is a description on how to tell which one is which.
Unit circle definition of trig functions: Sal shows how we can extend SOH CAH TOA so that we can define trig functions (sine, cosine, & tangent) for all real numbers.
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