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Outline

  1. Trigonometric functions
    1. Sum of interior angles
    2. Similar triangles
    3. Pythagoras Theorem
    4. Trigonometric functions

    Trigonometric functions

    Author:Kell Cheng
    Trigonometric functions

    Table of Contents

    • Sum of interior angles

      • Sum of interior angles
    • Similar triangles

      • Define similar triangle
      • Lemma (Similar Triangle 1)
      • Lemma (Similar Triangles 2)
      • Basic Proportionality Theorem
    • Pythagoras Theorem

      • Pythagoras Theorem
    • Trigonometric functions

      • Define Trigonometric functions
      • Trigonometric Identities 1
      • Trigonometric Identities 2
      • Compound Angle Formulas(1)
      • Compound Angle Formulas(2)
      • Graphical mnemonic
      • Compound Angle Formulas(3)
      • Double-angle Formulas
    Next
    Sum of interior angles

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