This product is part of Unit 12 (Writing Equations of Trig Functions). 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 focuses on how to write equations for sine and cosine functions based on key features of their graphs. Students learn to identify amplitude, period, phase shift, and vertical shift from a graph and use these values to construct the corresponding equa