Trigonometry Lecture 9 | Double-Angle Identities | Proving Identities and Evaluating Expressions
Channel: MathHub TV
Date: 2022-01-31

In this trigonometry lecture, I will discuss proving identities and evaluating expressions using double-angleidentities.  I will give a quick proof of the double-measure identities.  Then I will give 6 solved examples.  

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