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Handout

Purplemath: Quadrants and Angles

Curated by ACT

Explains how to model angles in the x,y-plane, and demonstrates how to extend the concept of trig ratios to angles larger than 90 degrees.

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CCSS: Adaptable
Concepts
pythagorean theorem, cosine, distance, length, sine, coordinate plane
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Additional Tags
purplemath, purplemath lesson, adjacent hypotenuse, angle, quadrant, radius circle, sign opposite, trig ratio
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Classroom Considerations
  • Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)
  • The intended use for this resource is Instructional
Common Core
8.G.B.8 6.NS.C.6.c