2009/03/01 by Jerzy Kocik, Andrzej Solecki · 1 citation
Mathematics · #Computer graphics (images) #Computer science #Direction cosine #Economics #Epistemology #Geometry #History and Theory of Mathematics #Logarithm #Mathematical analysis #Mathematics #Mathematics and Applications #Order (exchange) #Philosophy
paper · doi:10.1080/00029890.2009.11920932
crossref issued 2009/03/01 · crossref published 2009/03/01 · crossref published-print 2009/03/01 · openalex publication_date 2009/03/01 · crossref published-online 2018/01/31 · crossref created 2018/01/31 · crossref deposited 2022/08/13 · openalex created_date 2025/10/10 · crossref indexed 2025/12/31 · openalex updated_date 2026/08/03
This observation—which seems to be absent in all the presentations of trigonometryknown to us—proves to be a convenient tool for bringing order into the garden oftrigonometric identities. As an example, see Figure 2 for ways to visualize products ofsines and of cosines; they would perhaps please Napier in his experiments with suchproducts that eventually led him to the concept of logarithm.