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tan(a-b) proof without words
Author:
Gary Rubinstein
GeoGebra
Explain how this diagram, together with the equations below it, prove the
formula.
๐
New Resources
apec
ืืืืืื ืืืงืืจืื ื ืืืขืืืช ื ืชืื ื ืืขืื ืืืฆืืจืช ืืจืฃ ืืืชืื
Untitled
Visualizing the Pythagorean Identity with Sine and Cosine
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