Unit Circle - Topic 3 IB HL Maths AA

The **Unit Circle** is the foundation of all Trigonometry in **IB HL Maths AA**. If you want to master Topic 3 and secure that 7, you need to move beyond memorization and understand the geometric relationships between angles and coordinates. In this video, we explore how the unit circle defines $\cos\theta$ and $\sin\theta$ as the $x$ and $y$ coordinates of a point on a circle with $r = 1$. We break down how to derive exact values for $\frac{\pi}{6}$, $\frac{\pi}{4}$, and $\frac{\pi}{3}$, and how to extend these ratios into all four quadrants. This is essential for both Paper 1 (non-calculator) and Paper 2, providing the conceptual clarity needed for complex identities and circular functions. **If this video helps clarify the Unit Circle for you, please give it a 👍 and subscribe for more deep dives into the IB HL Maths AA syllabus!** --- ### 🏷️ Maximum Reach Hashtags #UnitCircle #IBMaths #IBMathAA #HLMaths #Trigonometry #InternationalBaccalaureate #IBDP #MathsTutorial #StudyWithMe #IBExamPrep #MathsHelp #ExactValues #IBRevision #Mathematics #STEM #HighSchoolMath #IBMathematics #StudyTips #CircularFunctions #RadianMeasure #MathsHL #StepByStepMaths #ExamStrategy #IBLife #MathsHighLevel #TrigRatios #Geometry #MathematicsEducation #IBTips