Is part (b) correct?
We move on to Chapter 5 aka Analytic Trigonometry. In Chapter 5, we tackle trigonometric identities and yes, more word problems. By the way, I love trigonometric identities.
Remember: There will be less questions moving forward to focus more on the concept behind each topic. In fact, I think it was you who stated a few weeks ago that learning the concept or idea leads to answering more questions correctly. So, I guess this is what we'll do.
It is my hope that you will stick around as we make our way to Calculus l. I expect to be in the James Stewart calculus textbook by early April or late March. Let's see what happens. Life is unpredictable.