Unit 4: Analytical Trigonometry

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4.8 Double-Angle and Power-Reducing Formulas.pdf

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4.7 Sum and Difference Formulas_2.19.pdf

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4.6 三角方程_1.3.pdf

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4.5 同角三角比的关系_12.29.pdf

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4.4 求三角比：诱导公式_12.27.pdf

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4.3 任意角的三角比_12.26.pdf

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4.2 Radian Measure_12.22.pdf

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4.1 Angles_12.21.pdf

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