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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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