IB Math AA HL · Unit 3 of 6

IB Math AA HL Unit 3: Geometry & Trigonometry

Unit 3 of IB Mathematics: Analysis and Approaches covers Geometry & Trigonometry. This unit contains 18 topics and 36 sub-topics. Below you'll find free study notes, flashcards, and exam preparation resources for every topic in this unit.

Higher Level students should treat this unit page as a route map: revise the shared core, then use the HL notes and topic links to reach the extra depth and evaluation expected at HL.

18 topics36 sub-topics

Exam technique guide

What Unit 3 covers

Trigonometry, identities and circular functions, plus vectors, lines and planes in two and three dimensions.

Topics in Unit 3

3.1

3D geometry

4 sub-topics

3.2

Sine & cosine rules

3 sub-topics

3.3

Bearings & elevation

2 sub-topics

3.4

Radians, arcs & sectors

2 sub-topics

3.5

Unit circle & exact values

2 sub-topics

3.6

Identities & double angles

2 sub-topics

3.7

Trig graphs & transformations

2 sub-topics

3.8

Trig equations

1 sub-topics

3.9

Reciprocal & inverse trig (HL only)

2 sub-topics

3.10

Compound angles (HL only)

1 sub-topics

3.11

Trig relationships (HL only)

1 sub-topics

3.12

Vectors (HL only)

2 sub-topics

3.13

Scalar product (HL only)

2 sub-topics

3.14

Vector lines (HL only)

2 sub-topics

3.15

Classifying lines (HL only)

2 sub-topics

3.16

Vector product (HL only)

2 sub-topics

3.17

Vector planes (HL only)

2 sub-topics

3.18

Lines & planes (HL only)

2 sub-topics

Study tip: Work through the topics in order — each builds on concepts from the one before. Start with notes, then reinforce with flashcards and practice questions.

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