Mathematics

11.9 Trigonometric Modelling

Term 3

Periodic behaviour · Sine and cosine functions · Fitting periodic models to data · [EXT] Set functions

Learning Objectives

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Trigonometric Modelling

  1. 1. Identify periodic behaviour in real-world contexts (tides, daylight, sound, rotating machinery).
  2. 2. Model periodic phenomena using $y = A \sin(B(x - C)) + D$ and $y = A \cos(B(x - C)) + D$.
  3. 3. Identify and interpret amplitude, period, mean (vertical shift) and phase shift.
  4. 4. Fit a sinusoidal model to data using technology.
  5. 5. Use a fitted model to predict and interpret values in context.
  6. 6. Investigate transformations of more general set functions and piecewise periodic functions.
  7. 7. Explore the tangent function.

Review Pack

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Fluency Pack A — 40 questions
Fluency Pack B — 40 questions
Problem-solving — 12 unfamiliar tasks
Worked solutions (Pack A + B + problems)

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