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Trigonometry, surveying and navigation (1903)
Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 145
Fig. 93 Fig. 94 Likewise the solution of a regular spherical polygon may bereduced to that of a right spherical triangle. Arcs of greatTrigonometry · Surveying · Navigation
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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