Chapter 4 Overview

In chapter 4 we learned a lot about trigonometry and its functions. In 4.1 we reviewed the basic ways to measure angles from a graph and learned about things like the standard position. In 4.2 and 4.3 we reviewed the sine and cosine functions and also the graphs of both of these and in 4.4 we learned about cosecant, cotangent and secant. 4.5 was about verifying trig identities which is basically getting one side of an equation to look like the other side through trig identities. In 4.6 we learned about sum and difference formulas which involved about thirteen formulas that we had to memorize. 4.7-4.9 were all about how to solve trig equations and also simple harmonic motion. Here is a list of some of
the identities we had to memorize.