411 REFERENCE · Wikibooks
A-level Mathematics/MEI/C4/Trigonometry
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Sections
/Reciprocal trigonometrical functions/
/Compound-angle formulae/
/Double-angle formulae/
/The factor formulae/
/The forms of r cos(θ ± α),r sin(θ ± α)/
/Small-angle approximations/
/The general solutions of trigonometrical equations/
/Using trigonometrical identities in integration/