Expand trigonometric ratios beyond right triangles. Pupils start with a review of trigonometric ratios and then take a look at angles in standard position to determine their measurements. Scholars discover how to find coterminal angles and name all of them. They practice their skills to reach mastery using the two worksheets.

Concepts

trigonometric, trigonometric ratios, similar triangles, terminal side, cosine, sine, trigonometric functions, tangent, angle measurement

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Instructional Ideas

• Split the presentation into two parts by asking students to watch the trigonometry review first and then the new information

Classroom Considerations

• It it beneficial to understand trigonometric ratios
• First segment in a four-part unit on trigonometry functions

• This video is hosted on YouTube

Pros

• Provides application problems to review trigonometric ratios
• Includes answer keys

Cons

• None

Common Core

HSF-TF.B.5