Hyperbolic Cosines and Sines Theorems for the Triangle Formed by Arcs of Intersecting Semicircles on Euclidean Plane

Robert M. Yamaleev

Journal of Mathematics, 2013, vol. 2013, 1-10

Abstract:

The hyperbolic cosines and sines theorems for the curvilinear triangle bounded by circular arcs of three intersecting circles are formulated and proved by using the general complex calculus. The method is based on a key formula establishing a relationship between exponential function and the cross-ratio. The proofs are carried out on Euclidean plane.

Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jjmath:920528

DOI: 10.1155/2013/920528

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