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.

Concepts

calculator skills, trigonometric, trigonometric ratios, trigonometry applications

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Additional Tags

math

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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

• This video is hosted on YouTube

Pros

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

Cons

• None

Common Core

HSG-SRT.C.8 MP5 MP6