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Excerpt from Plane and Spherical Trigonometry: With Stereographic ProjectionsIt is the aim of the authors in this text to teach logarithmic computation along with the principles of trigonometry. Many students gain some knowledge of the theory of logarithms, but few appreciate their value as a labor-saver in computing. In engineering schools, especially, it is complained that students after their study of logarithms are unable to compute with t...

Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

Excerpt from Plane and Spherical Trigonometry: With Stereographic Projections It is the aim of the authors in this text to teach logarithmic computation along with the principles of trigonometry. Many students gain some knowledge of the theory of logarithms, but few appreciate their value as a labor-saver in computing. In engineering schools, especially, it is complained that students after their study of logarithms are unable to compute with...