Mathematics A-Level
compound angle expansion
What compound angle expansion means in Mathematics A-Level, as defined for WJEC.
Definition of compound angle expansion
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Reference: WJEC
Expanding sin(x + h) or cos(x + h) using the correct compound angle formula, such as cos(x + h) = cos x cos h − sin x sin h.
Topics that use compound angle expansion
- Differentiation (A2 Unit 3: Pure Mathematics B) (WJEC A-Level)
Related terms
- algebraic simplification
- Chain rule
- concave curves
- connected rates of change
- convex curves
- differential equations formulation
- differentiation from first principles
- exponential differentiation
Using compound angle expansion in the exam
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