- Choosing the ratio
- Solving when x is underneath
- Solving the whole triangle
- What the inverse key does
- Choosing sin⁻¹, cos⁻¹ or tan⁻¹
- Solving a triangle from two sides
- Angles of elevation and depression
- Eye level, ramps and angles
- Bearings and right-angled routes
- Splitting a triangle in two
- Two triangles, one height
- Boxes, assumptions and precision
- Unlocks after
- Opens up