Relates the unit circle to the method for finding trig ratios in any of the four quadrants. Demonstrates how the unit circle might be useful.

Concepts

cosine, height, hypotenuse, radius, sine, tangent, unit circle

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Additional Tags

purplemath lesson, angle, base, circle, ratio, trig, unit

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Classroom Considerations

• Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)
• The intended use for this resource is Instructional

Common Core

HSF-TF.A.2 HSF-TF.A.3 HSF-TF.A.1 HSG-C.A.4