unit 7 chapter 5
Simplifying trig identities: http://www.youtube.com/watch?v=zJ2v1Q-Y6lk
Verifying trig identities: http://www.youtube.com/watch?v=3r9tSw3G6fc
part 1 Solving trig equations: https://www.youtube.com/watch?v=yCjazfH0C1Y
part 2 Solving trig equations: http://www.youtube.com/watch?v=BxZEu_WhHsk
part 3 Solving trig equations: https://www.youtube.com/watch?v=8du-AdgFA90
part 1 Sum and difference identities: http://www.youtube.com/watch?v=GgWBjv5Nhhk
part 2 Sum and difference identities: http://www.youtube.com/watch?v=EXzLq6a59Bs
part 1 Other trig identities: https://www.youtube.com/watch?v=YmS8Kwkql4E
part 2 Other trig identities: http://www.youtube.com/watch?v=FAllW809HJo