Understand the idea
Narrative explanations, diagrams, hints and traps are written for students rather than as a compressed formula sheet.
IB MATHEMATICS AA · TRIGONOMETRY · SL + HL · PREMIUM
Unit Circle & Double-Angle Identities
A very detailed introduction to the unit circle for younger students, then exact values, quadrant signs, reference angles, symmetry, the Pythagorean identity and the full sine/cosine double-angle toolkit. tan 2θ is clearly marked HL.
COMPLETE CHAPTER
Story-led teaching followed by serious IB practice.
A very detailed introduction to the unit circle for younger students, then exact values, quadrant signs, reference angles, symmetry, the Pythagorean identity and the full sine/cosine double-angle toolkit. tan 2θ is clearly marked HL.
See the decisions
Examples range from approachable technique to unfamiliar linked questions that require several ideas together.
Build independence
The matching worksheet moves from core skills into substantial IB-style and original CF Maths synthesis.
Protected library
Your purchase opens page-by-page in My Notes with a personalised licence watermark and no public PDF URL.
NEW TOPIC PRICING
Included in Topic 3 · Geometry & Trigonometry · €50
This chapter is no longer sold individually. One €50 topic purchase unlocks this chapter together with the other currently listed resources in Topic 3 · Geometry & Trigonometry inside the protected CF Maths My Notes library.
Open the complete topic bundle →IB RESOURCE LIBRARY
Continue the course
Return to the IB Mathematics hub to choose another chapter from Number & Algebra, Functions, Geometry & Trigonometry or Calculus.