The elements of non-Euclidean plane geometry and trigonometry, by H. S. Carslaw.
88, 89] TRIGONOMETRICAL FORMULAE 151 But, from ~ 88, we have b tan 7 k cos A = --- tan k b tan2a Therefore sin2 A = 1 — tan2 sin2 c - b c si2 c- tan2 k cos2 k; k k b c sin2 1 - sec2 - cos2 k k C sin2 1 - cos2 sin2 sin2 c k sin2 - sin B,.....................(4 sin = a. cos A=cossin.(4). a Therefore sint A n A. cos - = cot A cot B,...................... (6) can be easily deduced from those already obtained.
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About this Item
- Title
- The elements of non-Euclidean plane geometry and trigonometry, by H. S. Carslaw.
- Author
- Carslaw, H. S. (Horatio Scott), 1870-1954.
- Canvas
- Page 148
- Publication
- London,: Longmans, Green and co.,
- 1916.
- Subject terms
- Geometry, Non-Euclidean
- Trigonometry
Technical Details
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https://name.umdl.umich.edu/abr3556.0001.001
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"The elements of non-Euclidean plane geometry and trigonometry, by H. S. Carslaw." In the digital collection University of Michigan Historical Math Collection. https://name.umdl.umich.edu/abr3556.0001.001. University of Michigan Library Digital Collections. Accessed May 8, 2025.