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20. Trigonometry
20.01 Trigonometric ratios
20.02 Angles of elevation and depression (Extended)
20.03 Bearings
20.04 Sine rule (Extended)
20.05 Cosine rule (Extended)
20.06 Area rule (Extended)
20.07 Applications (Extended)
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20.08 Trigonometry in 3D (Extended)
20.09 Distance from a point to a line (Extended)
20.10 Exact values (Extended)
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iGCSE (2021 Edition)

20.07 Applications (Extended)

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