Prove Basic Trig Identities Part 1

Shows steps for proving (or verifying) Trigonometric Identities; Youtube videos by Julie Harland are organized at http://yourmathgal.com<br />For more great math videos visit: www.youtube.com/user/videosbyjulieharland/videos . Aligned to Common Core State Standards: HSF-TF.8, HSF-TF.9