##### Subchapters

- Constant Ratios in Right Triangles
- Connecting Slope Ratios to Specific Angles
- Expanding the Trig Table
- The Tangent Ratio
- Applying the Tangent Ratio
- Using an Area Model
- Using a Tree Diagram
- Probability Models
- Unions, Intersections, and Complements
- Expected Value
- Chapter 4 Closure