In order to solve trigonometric equations, you sometimes need to apply identities (i.e., rules that state what common expressions are equal to). This video walks through some of the most important trig identities to know and uses them to solve equations.


Lesson 1: The Basics

Lesson 2: Solving equations and inequalities

  1. Why solve equations?
  2. Solving equations: Quadratics
  3. Exercises: Solve quadratic equations
  4. Solving equations: Absolute values
  5. Exercises: Solve equations involving absolute value
  6. Solving equations: Polynomials
  7. Exercises: Solve polynomial equations
  8. Solving equations: Rational expressions
  9. Exercises: Solve equations involving rational expressions
  10. Solving equations: Exponents
  11. Exercises: Solve exponential equations
  12. Solving equations: Logs
  13. Exercises: Solve logarithmic equations
  14. Solving equations: Trigonometric functions 📝
  15. Trig identities
  16. Exercises: Solve trigonometric equations
  17. Why solve inequalities?
  18. Solving inequalities
  19. Exercises: Solve inequalities

Lesson 3: Graphing

Lesson 4: Limits and series

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