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Another name for the law of cosines in France is
Athéorème de Viète
Bthéorème d'Al-Kashi
Cthéorème de Fermat
Dthéorème de Pascal
Answer & Solution
Correct answer: B. théorème d'Al-Kashi
French texts call the cosine law the théorème d'Al-Kashi after Jamshid al-Kashi.
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