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Discovering Cosine Law
Author:
Erika Scheerer
,
Ryan Smith
Topic:
Cosine
A simple triangle manipulation. The values of c^2; a^2 + b^2; and 2ab(cosC) are displayed.
GeoGebra
Drag the verticies of the triangle. Consider how are the shown values connected.
New Resources
Pythagorean Day
Linear Approximations
Intercepts in 3D
Untitled
MC #2
Discover Resources
Activity
Triangle Dilation
Relationship Between Inscribed Angle and Intercepted Arc
test
Turchia-Samsun Talete1
Discover Topics
Coordinates
Centroid or Barycenter
Incircle or Inscribed Circle
Trigonometry
Complex Numbers