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Trigonometry

• Measurement of Angles
• Trigonometric Functions in a Right Triangle
• Pythagorean Trigonometric Identities
• Solving Right Triangles
• Trigonometric Functions of a General Angle
• Signs of Trigonometric Functions
• Periodicity of Trigonometric Functions
• Addition and Subtraction Formulas for Sine and Cosine
• Addition and Subtraction Formulas for Tangent and Cotangent
• Cofunction and Reduction Identities
• Double-Angle and Multiple-Angle Identities
• Half-Angle Identities
• Sum-to-Product Identities
• Product-to-Sum Identities
• Superposition of Harmonic Oscillations
• Power-Reduction Formulas
• Law of Sines
• Law of Cosines
• Solving General Triangles
• Graphs of Sine and Cosine Functions
• Basic Trigonometric Equations
• Basic Trigonometric Inequalities