Trigonometric Ratios with a Calculator: Lesson

This Trigonometric Ratios with a Calculator: Lesson video also includes:

Calculators ... they are more efficient than tables. Using two 30-60 right triangles, the segment of a playlist on geometry shows that trigonometric ratios for an angle are the same independent of the size of the triangle. The video shows how to use a calculator to solve right triangles.

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CCSS: Adaptable
Instructional Ideas

  • Make sure classmates know how to enter trigonometric ratios into their calculators
Classroom Considerations

  • Pupils should be familiar with the ratio of the lengths of the sides of special right triangles
  • Assumes individuals know how to round numbers given by technology
Pros

  • Contains a link to more resources involving trigonometric ratios and calculators
  • Works several examples
Cons

  • None
Common Core