Скачать или смотреть 10.4 Trigonometric Identities (Round Two)

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00:00 Intro & Warm-Up
00:57 Exploring Even vs Odd Trig Functions
02:47 Even and Odd Identities
05:09 Sum and Difference Identities
06:20 Example - Find exact value of cos(15)
08:56 Example - Find exact value of sin(19pi/12)
12:20 Example - Find sin(alpha - beta) given values for alpha and beta
18:15 Example - Verify Cofunction Identity using Difference Identity for Cosine
20:27 Cofunction Identities
20:54 Double Angle Formulas
21:33 Proof - Cosine Double Angle Formula
25:03 Example - Find sin(2theta) and cos(2theta)
29:36 Example - Verify Identity (uses double angle & Pythagorean identity)
32:52 Half Angle Formulas
33:26 Example - Find exact value of cos(15)
36:41 Example - Find sin(theta/2) given cos(theta)
39:22 Congratulations on making it to the end!