The Right Triangle Trigonometry module introduces students to three trigonometric ratios and the Fundamental Identity of Trigonometry. Students investigate historical uses and experience in working with real-world scenarios. Lesson 1 Angles and Their Triangle Ratios Students learn the definitions of various kinds of angles and the definitions of three trigonometric ratios.
Students use measurement to compute values of trigonometric fratios.
Lesson 2 Solving Right Triangles Students extend the definitions of trigonometric ratios to right triangles. Using this extension, students determine the values of missing measurements for given right triangles. The Unit Circle Students extend the definitions of trigonometric ratios to central angles of a unit circle. Values for trigonometric ratios of special angles are computed. Lesson 4 Applications and Extensions Students investigate the behavior of the trigonometric ratios and relate the Pythagorean Theorem and the Fundamental Identity of Trigonometry.