Students,

I have found some videos for you that should help you to improve your understanding about "Verifying" Trig Identities.

Make sure that you stop the videos and try working through the problems yourself (using scratch paper), and then see if you can try a different way to verify them, and then watch the video and compare your methods/strategies with the instructor's methods/strategies:

https://www.youtube.com/watch?v=I4mcja8abDc

https://www.youtube.com/watch?v=NK4MlZXepYQ

https://www.youtube.com/watch?v=AzP3-KLqy8k&list=PL0G-Nd0V5ZMos0wJjgo2eAIU0pwSOJiFO

https://www.youtube.com/watch?v=wT9QFwkvznk

https://www.youtube.com/watch?v=wT9QFwkvznk&list=PL0G-Nd0V5ZMos0wJjgo2eAIU0pwSOJiFO&index=3

https://www.youtube.com/watch?v=T8osTX2DpYY&list=PL0G-Nd0V5ZMos0wJjgo2eAIU0pwSOJiFO&index=7

https://www.youtube.com/watch?v=N-TX0E5Mykc&list=PL0G-Nd0V5ZMos0wJjgo2eAIU0pwSOJiFO&index=11

https://www.youtube.com/watch?v=vpBlkrPltE8&list=PL0G-Nd0V5ZMos0wJjgo2eAIU0pwSOJiFO&index=14

https://www.youtube.com/watch?v=gRW8-dlURkk&list=PL0G-Nd0V5ZMos0wJjgo2eAIU0pwSOJiFO&index=25

https://www.youtube.com/watch?v=QrQ32XCbBNI&list=PL0G-Nd0V5ZMos0wJjgo2eAIU0pwSOJiFO&index=21