Mathematics: Analysis and Approaches · Topic 3: Geometry and trigonometry

AHL3.10 — Compound and double angle identities

Mathematics: Analysis and Approaches · SL / HL · syllabus-mapped notes

Compound angle identities
Expand the sine, cosine and tangent of a sum or difference of two angles.
Double angle identities
Derive the double angle identities from the compound angle identities and apply them.

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