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Trigonometry - Edexcel Trigonometric graphs - Higher. The three trigonometric ratios; sine, cosine and tangent are used to calculate angles and lengths in right-angled triangles.
Straight line graphs - Edexcel. ... Trigonometry - Edexcel. The three trigonometric ratios; sine, cosine and tangent are used to calculate angles and lengths in right-angled triangles.
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