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3. Trigonometry
3.01 Pythagoras' theorem
3.02 Finding unknown sides
3.03 Finding unknown angles
3.04 Degrees and minutes
3.05 Angles of elevation and depression
3.06 True bearings and compass bearings
3.07 The sine rule
3.075 Sine rule - the ambiguous case
3.08 Applications of the sine rule
3.09 The cosine rule
3.10 Applications of the cosine rule
3.11 The area of a triangle
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3.12 Various applications
3.13 Radial surveys
INVESTIGATION: Australian Aboriginal Astronomy
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AustraliaNSW
Year 12

3.11 The area of a triangle

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