Core 1-4 Trigonometry Notes

These are notes that I have made myself, covering all the Trigonometry needed in C1, C2, C3, and C4. My exam board is Edexcel, but all the things included in here are transferable to the other exam boards.

Formulas to remember have been highlighted, and there are also derivations for some of the things necessary to know.

Topics covered are; Basic Trigonometric Ratios (circular functions), Sine Rule, Cosine Rule, Inverse Trigonometric Functions,  Pythagorus' Theorem, Reciprocal Functions, Pythagorean Identities, Compound Angle Formulae, Double Angle Formulae, R-alpha method, Half-Angle Formulae, and Factor Formulae.

THERE ARE NO WORKED THROUGH EXAMPLE QUESTIONS, ALTHOUGH THE R-ALPHA METHOD HAS BEEN WORKED THROUGH ALGREBRAICALLY.

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