Mathematics GCSE
Unit circle
What Unit circle means in Mathematics GCSE, as defined for Pearson Edexcel.
Definition of Unit circle
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Reference: Pearson Edexcel
A circle of radius 1 centred at the origin, with a point at angle θ having coordinates (cos θ, sin θ).
Topics that use Unit circle
- Geometry and measures - Mensuration and calculation (Pearson Edexcel GCSE)
Related terms
- Arc
- arc length
- area and volume units
- area of a segment
- Chord
- Circumference
- Composite shapes and solids
- Congruence
Using Unit circle in the exam
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