Mathematics A-Level
ambiguous case
What ambiguous case means in Mathematics A-Level, as defined for WJEC.
Definition of ambiguous case
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Reference: WJEC
May yield two valid angle solutions since sin θ = sin(180° − θ), arising when given two sides and a non-included angle.
Topics that use ambiguous case
- 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 ambiguous case in the exam
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