This product is part of Unit 12 (Sine and Cosine Graphs). Get the full unit or even better, the full year below: Algebra 2 Full Year Curriculum (lessons, Homework, Reviews, Assessments, Answer Keys, All editable)This Trigonometry lesson introduces students to the graphs of the sine and cosine functions, focusing on how their key features— amplitude, period, midline, and phase shift—shape their behavior. Students learn how to sketch these periodic functions using the unit circle and interpret