3.1: 3d space, volume, angles, midpoints
3.2: 2d and 3d trig, Sine and Cosine Rule
3.3: Angle of Elevation and Depression, Bearings
3.4 Length of an arc, Area of a sector
3.5 Unit Circle, Trig Ratios
3.6 Double Angles
3.7 Circular Functions, Composites, Transformation
3.8 Trig equations
3.9 Reciprocal Trig Functions
3.10 Compound Angle Identities
3.11 Relation between Trig Functions
3.12 Vectors
3.13 Scalar Dot Products
3.14 Vector Equation of a Line
3.15 Classification of Line
3.16 Vector Product
3.17 Vector Equation of a Plane
3.18 Intersection of Line and Plane
