Notes, 11/2/09

Today we began to move into trigonometry by looking at angles and their measures. The two units of measurements for angles are degrees and radians. It should be noted that one radian is the measure of the angle formed at the center of a circle when the arc length is the same as the radius. This comes out to approximately 57.1 degrees. (see notes for picture) We also looked at how to determine arc length, as well as supplementary and complementary angles. Notes below.