Then we used our values from the unit circle to complete the cosine table from -2pi to 2pi and then created the graph. We looked at the features of the cosine graph and found that some were the same as the sine funciton. One big difference is that the cosine graph starts at the max or minimum value. We also looked at the vertical shift and how it moves the midline up or down from the x-axis. We also were able to identify the correct parent function (sine or cosine) based on its y-intercept.
Use the links below for reivew or practice
https://www.youtube.com/watch?v=YVQbGZ9KfFM up to the 5 minute mark
HW: Complete WS 13.4 Test Prep (this is on the back of WS 13.4 Reteaching)