Chapter 4 Summary

In chapter 4, the main focus was on trig. We began by learning about the angles of the special triangles and their measurements meaning their values. Then we moved on to identifying the three fundamentals to trig: sine, cosine and tangent. We split them up so that sin and cos were in a group since tangent is so different from the other two. So we looked at the graphs of sin and cos and how they relate to the unit circle on this web simulator. Then together with the tan, we learned of the inverse functions of the sin, cos, and tan functions csc, sec, and cot. They were basically just reciprocate of eachother. Then we out the basics to use as we used sum and difference, half angels, and double angles along with inverses to solve questions.