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Chapter 5. Formulas of a half angle (Power Reduction Formulas)

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Table of Contents

 

Half Angle Formulas (Power Reduction Formulas)

Proof of the power reduction Formulas

Expression of trigonometric functions through the tangent of a half argument

Universal trigonometric substitution

Topics in Trigonometry
  • Basic Concepts Of Trigonometry
  • Trigonometric Identities and Formulas
    • Chapter 1. Basic Trigonometric Identities
    • Chapter 2. Trigonometric Reduction Formulas
    • Chapter 3. Formulas of Sums and Differences of angles
    • Chapter 4. Formulas of a double angle and a triple angle
    • Chapter 5. Half Angle Formulas
    • Chapter 6. Sum to Product and Product to Sum Formulas
    • Chapter 7. Formulas of the complementary angle
    • Chapter 8. Trig Cheat Sheet
  • Graphs and properties of trigonometric functions
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