Session 9: Triangle geometry and introduction to trigonometry

In this session we introduce the trigonometric functions, and study their application to calculating the angles and side lengths of triangles. We will also cover the more general form of the trigonometric functions.

Note that the contents of the videos for this session and the subsequent session may overlap and not match precisesly with the order of topics in the lecture notes.

Main lecture videos:
  1. Triangle geometry.
  2. Right-angle triangles example.
  3. Sine rule example.
  4. Cosine rule example.
  5. Role of amplitude.
  6. Role of angular frequency.
  7. Role of the phase shift.
  8. Role of the vertical shift.
Additional videos: Downloads: Extra resources from other sites:

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