Mathematics A-Level
Compound angle identities
What Compound angle identities means in Mathematics A-Level, as defined for AQA.
Definition of Compound angle identities
Check what you remember
Read the wording for your board, then hide it and explain Compound angle identities in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Formulae for sin(A ± B), cos(A ± B) and tan(A ± B) that you must derive and state.
Topics that use Compound angle identities
- E: Trigonometry (AQA A-Level)
Related terms
- Algebraic manipulation
- Amplitude
- Asymptote
- Derivation and manipulation of identities
- Domain and range restrictions for functions
- exact trigonometric values
- Graphical behaviour including asymptotes and ranges
- harmonic form
Using Compound angle identities in the exam
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