Lesson 1: Primary Trigonometric Ratios

• Key definitions and review of right-angled triangles

  • Sine formula: SOH

  • Cosine formula: CAH

  • Tan formula: TOA

• Finding trigonometric ratios

• Finding inverse trigonometric ratios

• Examples solved to the nearest degree

• Strategies for solving triangles

• Review of geometrical terms

• Solving application type word problems

Lesson 2: Sine and Cosine of Angles > 90°

• Key definitions

  • Standard position and component parts

• Sine and cosine of angles in each quadrant

• Examples using various points on the terminal arm

• Supplementary angle relations

• Evaluating solutions based on quadrant locations

• Evaluating angles within limits

Lesson 3: The Sine and Cosine Rule

• The Sine rule

  • The Sine formula

  • 2 conditions for Sine rule

  • Solving triangles using Sine rule

• The Cosine rule

  • The Cosine formula

  • 2 conditions for Cosine rule

  • Solving triangles using Cosine rule

• Deciding when to apply

  • 5 key questions to ask

Here are a few sample questions for you to practice. The answers are given at the end.