Go around the unit circle and create triangles. Pupils move a point around the unit circles to visualize the triangle associated with the angle in standard position. The three main trigonometric functions are defined in terms of the legs of the triangle. Scholars manipulate trigonometric functions to determine the equivalence.

Concepts

trigonometric, trigonometric functions, trigonometric ratios, terminal side, unit circle, tangent, cosine, sine

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Additional Tags

math

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Instructional Ideas

• Conduct a quick review on multiplying rational expressions

Classroom Considerations

• Requires registration for free account for access
• Individuals should know the definitions of the trigonometric ratios

Pros

• Contains hints for the problems
• Uses colors to help identify lengths on the triangles

Cons

• None

Common Core

HSF-TF.A.2 MP5 MP6