Lesson 1: The Tangent Ratio - Summary

   Summary

Download a copy of the summary. Word version or PDF version.

Review what you have learned prior to completing the Lesson Assignment.

Key Ideas

  • All triangles containing an identical acute angle have the same ratio of corresponding side lengths.

  • \(\text{tangent of angle}\,\theta=\frac{\text{length opposite}\,\theta}{\text{length adjacent to}\,\theta}\)

  • Ensure your calculator is in 'degree' mode.

Key Terms

  • tangent ratio
  • side opposite θ
  • side adjacent to θ
  • hypotenuse
  • trigonometry
  • corresponding side length
  • degree mode


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