CAUTION: Radians and Degrees When you are calculating trigonometric using a calculator or software, make sure you are using degrees and not radians Right Triangles Can use Sine, Cosine, and Tangent to determine the proportions of sides in right triangles Circles Can use Sine, and Cosine to determine the x and y values on a circle Note:

Similar Triangles Two triangles are similar if they have the same angles Note: This means that the triangles have the same shape, but might be a different size or facing a different direction $\Delta UVW \sim \Delta ABC$ Shrinking doesn't change the angles

Chat Analytics slides: https://hackmd.io/@shawnhermans/chat-analytics Note: Oh hey, these are some notes. They'll be hidden in your presentation, but you can see them if you open the speaker notes window (hit s on your keyboard). Problem Students prefer chat software like Slack, Discord, or Teams, but it is difficult to track analytics