Trigonometry and precalculus
Basic Trigonometry

Unit circle definition of trigonometric functions

  1. Unit circle definition of trig functions
  2. Example: Unit circle definition of sin and cos
  3. Example: Using the unit circle definition of trig functions
  4. Example: Trig function values using unit circle definition
  5. Example: The signs of sine and cosecant
  6. Unit Circle Manipulative
  7. Unit circle
Additional content

Example: Trig function values using unit circle definition Worked example that uses the unit circle definition to evaluate trig functions

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Example: Trig function values using unit circle definition

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