Circles: Equation, Tangents & Chords | IAL Maths | Cambridge 9709 · Edexcel YMA01 · OxfordAQA 9660

Circles for International A Level Maths: the equation of a circle, centre and radius, completing the square for the general form, tangents and normals, where a line meets a circle (the discriminant), the angle in a semicircle, perpendicular bisectors of chords and translating a circle. 📝 Edexcel YMA01 notes: Coordinate geometry (free): https://www.thinka.ai/en-GB/Pearson-E... 📱 Thinka app: practice questions and notes: https://www.thinka.ai/en-GB/download?... AI tutor Emma teaches from the Thinka notes, one step at a time, with every line of every example worked in full. A Board Check shows where Cambridge 9709 (Paper 1), Edexcel YMA01/YPM01 (unit P2) and OxfordAQA 9660 (unit PSM1) test circles. ⏱️ Chapters 0:00 Intro, why it matters and key terms 1:57 The equation of a circle 5:31 The general form: completing the square 11:37 Tangents and normals 16:47 Where a line meets a circle 22:17 The angle in a semicircle 24:18 Chords and perpendicular bisectors 30:06 Translating a circle 32:00 Board Check: Cambridge, Edexcel, OxfordAQA 32:59 Exam tips 34:38 Recap 🔗 Study resources 📝 Edexcel YMA01 notes: Coordinate geometry (free): https://www.thinka.ai/en-GB/Pearson-E... 📝 OxfordAQA 9660 notes: Circle: https://www.thinka.ai/en-GB/Oxford-AQ... 📝 Cambridge 9709 notes: Coordinate geometry: https://www.thinka.ai/en-GB/Cambridge... 📝 Edexcel YPM01 notes: Coordinate geometry: https://www.thinka.ai/en-GB/Pearson-E... 📊 Edexcel YMA01 past paper analysis (January 2026): https://www.thinka.ai/en-GB/past-pape... 📊 Cambridge 9709 past paper analysis (June 2026): https://www.thinka.ai/en-GB/past-pape... ✍️ Edexcel YMA01 practice paper with answers: https://www.thinka.ai/en-GB/past-pape... 📚 More 📖 All Cambridge 9709 Mathematics notes: https://www.thinka.ai/en-GB/Cambridge... 📖 All Edexcel YMA01 Mathematics notes: https://www.thinka.ai/en-GB/Pearson-E... 📖 All OxfordAQA 9660 Mathematics notes: https://www.thinka.ai/en-GB/Oxford-AQ... ▶️ Playlist: A Level Mathematics Video Course | Cambridge 9709 · Edexcel IAL · OxfordAQA 9660 →    • A Level Mathematics Video Course | Cambrid...   🤖 About this video Emma is an AI tutor: her image and voice are AI-generated. The lesson follows Thinka's study notes and does not reproduce any exam board's past-paper questions. #ALevelMaths #Circles #ALevel