Williams K A Trillion Triangles Trigonometry 2ed 2018 torrent

Textbook in PDF format

This self-contained book shows a unified and easy approach to trigonometry using triples like 3,4,5 which can represent the sides of a right-angled triangle. This method is so powerful and simple that quite advanced topics can be tackled and understood at an earlier age than usual. Though, as we see here, the usual sines, cosines etc. can be avoided, they are included to connect up with the "traditional" approach. Because these triples can be used in many different areas of mathematics they have a unifying influence, which is a very welcome in our study and teaching of mathematics