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## CHAPTER 5: INTRODUCTION TO TRIGONOMETRY

### The Chapter Problem: Mechanical Engineering

Mechanical Engineer — Job Description

Bicycle Design — Information and Exploration

### Challenge 1

Wheelchair Ramp Codes — Information ### Challenge 2

Understanding Weather Satellites — Information and Resources ### 5.2 Investigating and Comparing Triangles

Exploring Similar Figures — Exploration
Exploring Congruency and Similarity — Exploration ### 5.4 Modelling with Similar Triangles

Similar Triangles and Shadow Reckoning — Tutorial ### 5.6 Investigating the Connection Between Slope and Angle

Slope — Exploration
The role of m in y = mx + b — Exploration ### 5.7 The Primary Trigonometric Ratios

The Sine Ratio — Tutorial
The Cosine Ratio — Tutorial
The Tangent Ratio — Tutorial
The Primary Trigonometric Ratios — Tutorial and Exploration ### 5.8 Solving Problems Using Right Triangle Models and Trigonometry

Solving Right Triangles — Tutorial
Right Triangle Solvers — Online Calculator   