120 likes | 224 Views
1316 Trigonometry Chapter 3 - Section 3 Radian and Degree Measure. A circle can be divided into parts based on the degree measure of the angle starting at the right side and moving counter-clockwise. 90 º. 180 º. 0 º. 270 º. Each quadrant can be divided into smaller angles. 90 º. 120 º.
E N D
1316 TrigonometryChapter 3 - Section 3Radian and Degree Measure
A circle can be divided into parts based on the degree measure of the angle starting at the right side and moving counter-clockwise. 90º 180º 0º 270º
Each quadrant can be divided into smaller angles. 90º 120º 60º 45º 135º 150º 30º 180º 0º 210º 330º 225º 315º 240º 300º 270º
We can also restrict the radius of the circle to 1 unit making the circumference = 2. The units are now called radians and the angles become Radius = 1
Each quadrant can be divided in half. Radius = 1
Each half can be divided into thirds. Radius = 1
Each quadrant can be divided into smaller angles. 90º 120º 60º 45º 135º 150º 30º 180º 0º 210º 330º 225º 315º 240º 300º 270º
Converting Degrees to RadiansRadians to Degrees Multiply by