If you want to learn the material, you'll need to practice!
Practice problems are here: M5-U4-Practice.docx
Optional and mathematically interesting video discussing how you can graph sine and cosine graphs using transformations.
This first video uses degrees, but you know how to convert!
More (optional) ferris wheel problems!
Another tide problem!
Practice quiz 6 solutions (not fully updated, but most solutions are on here)