Precalculus: Trig Identities Part 2/2

Covers the double-angle and half-angle identities for sine, cosine, and tangent.

0:00 Page 1 Double-angle identities for sine and cosine
3:53 Page 2 Using the double-angle identity for cosine
7:21 Page 3 Half-angle identities for sine and cosine
10:19 Page 4 Using the half-angle identity for sine
11:48 Page 5 Using the half-angle identity for cosine
14:47 Page 6 Double- and half-angle identities for tangent
16:32 Page 7 Using the double- and half-angle identities for tangent