Dollar Math

This is designed for use with a Pre-Calculus class but can be used with any class studying the unit circle and trigonometry. The students are asked to find the sine, cosine, and tangent of the point typically associated with a unit circle. Students should be familiar with finding trig ratios by plotting points and using reference angles and the related triangles. The term "reference angle" is not used, however. Then students plot the points and discover the unit circle. I use Desmos to plot