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Author:Peng Zheng

New Resources

  • Rule of Sarrus - Determinant of a 3×3 Matrix
  • Row and Column Views of Systems of Linear Equations
  • Other Variations of Cosine
  • Regular Star Polygons
  • Slope Between 2 Points (Phase 2)

Discover Resources

  • Start, Copy an Angle
  • Fr Trig Functions
  • Publicity: Nissan (by Elias)
  • fraction1
  • Identifying Sine, Cosine, Tangent Ratios in Right Triangles (Quick)

Discover Topics

  • Cosine
  • Constructions
  • Reflection
  • Scatter Plot
  • Real Numbers
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