Students learn how to derive the harmonic identities using the various addition formulae.
Later, as learning progresses, they use the harmonic identities formulae to solve trigonometric equations.
Edexcel A-Level Mathematics Year 2: Pure 2: Algebraic Methods
Scheme of work: A-Level Further Mathematics: Further Pure 1: The t – formulae
A-Level Scheme of work: Edexcel A-Level Mathematics Year 2: Statistics: Regression, Correlation and Hypothesis Testing