Kells L. Plane and Spherical Trigonometry 2ed 1940 torrent

Textbook in PDF format

Classical treatise on Plane and Spherical Trigonometry. Scholars believe that this work is important enough to be preserved, reproduced, and made generally available to the public. Thoroughly cover plane and spherical trigonometry.
The book is a very practical introduction to trigonometry and covers more topics with greater depth than many other texts. There are numerous problems and examples. There's a sensitivity to real-world applications that is lacking in newer math textbooks. Although this book was published some time ago, it appears to be the best regarding explanations, examples, and problems with answers especially for spherical trigonometry that is available. There are many example problems in plane and spherical trigonometry including the celestial sphere. The book does cover a lot of ground