Chapter: Introduction to Trigonometry

• Angles and Measurements

  • Types of Angles: Acute, Obtuse, Right, Straight
  • Unit of Measurement: Degrees and Radians
  • Conversion between Degrees and Radians

• Trigonometric Ratios

  • Sine (sin): Opposite side / Hypotenuse
  • Cosine (cos): Adjacent side / Hypotenuse
  • Tangent (tan): Opposite side / Adjacent side

• Trigonometric Functions

  • Domain and Range of sin, cos, tan
  • Periodicity of sin, cos, tan
  • Graphs of sin, cos, tan

• Identities and Formulas

  • Pythagorean Identities: sin^2 A + cos^2 A = 1
  • Sum and Difference Formulas
  • Product to Sum and Sum to Product Formulas

• Example Problems

  • Finding Trigonometric Ratios of a Right Angle Triangle
  • Solving Trigonometric Equations using Identities and Formulas
  • Applications in Real Life (e.g. Surveying, Navigation, etc.)