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Chapter 2 — Trigonometry
This chapter expands on basic right-triangle trigonometry by introducing angles in standard position and the unit circle. Students learn to work with the Sine Law and Cosine Law to solve for missing sides and angles in non-right triangles, including the complex "ambiguous case." Special triangles and exact trigonometric ratios are emphasized to move beyond simple calculator dependence. These tools are essential for advanced physics and engineering applications.

Answer Keys

Practice Quizzes

Quick self-checks and formative quizzes.