Mathematics A-Level
reference angles
What reference angles means in Mathematics A-Level, as defined for WJEC.
Definition of reference angles
Check what you remember
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Reference: WJEC
The acute angle with the x-axis, found first before attaching the correct quadrant sign.
Topics that use reference angles
- Trigonometry (AS Unit 1: Pure Mathematics A) (WJEC A-Level)
Related terms
- area of a triangle
- CAST diagram
- cosine rule
- equation solving
- factorisation
- multiple-angle equations
- periodic solutions
- principal value
Using reference angles in the exam
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