4:50
Trigonometry Lessons Part 2: Identities
Jane
4:57
Trigonometry Lessons Part 3: Identities
7:35
Trigonometry Lessons Part 4 Identities: sin (A + B)
5:43
Trigonometry Lessons Part 5 Identities: cos (A + B)
3:15
Trigonometry Lessons Part 6: Double Angle Identities
3:38
Trigonometry Lessons Part 7: Half Angle Identities
5:40
Trigonometry Lesson 8: WRONG Proofs!!!
8:47
Trigonometry Lesson 9: RIGHT Proofs
