Publisher's Synopsis
Excerpt from A Treatise on Plane Trigonometry: Containing an Account of Hyperbolic Functions, With Numerous Examples
I have given a systematic account of Imaginary Angles and Hyperbolic Functions; the latter, from their great analogy to Circular Functions, are very interesting, and their great and increasing importance, not only in Pure Mathematics but in Mathematical Physics, makes it essen tial that the student should become acquainted with them.
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