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Directrix of Ellipse / Hyperbola

Author:Michael Borcherds

New Resources

  • Polar Coordinates Book
  • Tracing r = 2 cos(θ)
  • Cosine in Cartesian and Polar Coordinates
  • Sine in Cartesian and Polar Coordinates
  • Special Right Triangles 30°-60°-90° and 45°-45°-90°

Discover Resources

  • Maximize Rectangle area with given perimeter
  • Centers of Dilation Continued
  • Intro-Book 1: Basic Geometric Constructions
  • Tangent Triangle
  • Tan deriv
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