Decoding Basic Trigonometric Ratios

Demonstrate the calculator keystrokes necessary for finding a measure of an angle using trigonometry. A straight forward lesson explains how to calculate an angle measure given a sine, cosine, or tangent ratio. The narrator discusses rounding as well.

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CCSS: Adaptable
Instructional Ideas

  • Post the video as a resource for absent pupils
  • Pause the video to allow pupils to make calculations before the instructor shows the correct answer
Classroom Considerations

  • Builds on an understanding of sine, cosine, and tangent ratios

  • Disable YouTube comments to ensure there is nothing inappropriate
  • Explanations apply to different variations of calculators

  • None