Hi guys, Welcome to the Advanced Video Search Engine, and you are watching Redefining the Trig Functions on the Unit Circle (1 of 2: The Basic Concept). That video is uploaded by Eddie Woo at 2015-03-09T14:00:02-07:00. We are promoting this video only for entertainment and educational purpose only. So, I hope you like & enjoy it. [uu2nJEbap80]