The difference between using similarities (Chapter 2) and Trigonometry (Chapter 6) part 1/2 скачать в хорошем качестве

The difference between using similarities (Chapter 2) and Trigonometry (Chapter 6) part 1/2

Part 1 of the full video In similarity, we always compare two triangles. The triangles do not have to be right-angled, but their corresponding angles must be exactly the same. That’s the first condition. The second condition is about the sides. The sides do not have to be equal, but they must be proportional. This means the ratios between corresponding sides are the same. One triangle can be larger or smaller, but the shape must stay identical. That’s why, when solving similarity problems, we make a ratio table. Not just any table — a ratio table — because we use the fact that the ratios between corresponding sides stay constant. Trigonometry is different. There we usually work with one right-angled triangle. We use fixed side ratios — sine, cosine, and tangent — to calculate missing sides or even angles. Part 2: