Additional Videos for Section 5.5 Solving Trig Equations Using the Double Angle Formulas

https://www.youtube.com/watch?v=7Eo-fuy0f7g

https://www.youtube.com/watch?v=RDt8eYxLZ-Y

https://www.youtube.com/watch?v=rF36a8K_3QM

https://www.youtube.com/watch?v=H4cOz7ubTvk (helps you understand how the domain will change for a double angle)

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