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Math without words

Sum sine ("proof" for angles smaller than 90º)

"Proof" for angles smaller than 90º

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Ministério da Educação, DGE, UP

Created on: 2007

Last update: 2024-12-05 16:14:19+0000

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.