oart whereof L F is the meafure of the vertical angle BAD. A nd from theangular points BandD, draw the peripheries NMQ, EGR (the meafurcsof the angles atthe Bafe , ) till they interfett the periphery Q.R. And continuing the l;d~s A B, AD, to-gether with the perpendiculars A CuntoL, F, and I, the… … %igonometria Britamiha. therefore that the fines complement of the vertical angles I R> IQ^are reciprocally proportional to the tangents of the fides F M, L G>jr. for by the 2 Axiom. ^ r Sines of►§ jTangents of8 yvhole fineq*\_Tangents of <2IRIIH-IHQF.RJLFM.LG Therefore excluding the…
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![An illustration from Mundus subterraneus, in XII libros digestus : qvo divinum subterrestris mundi opificium, mira ergasteriorum naturae in eo distributio, verbo [pantamorphon] Protei regnum, universae denique naturae majestas & divitiae summa rerum varietate exponuntur, abditorum effectuum causae acri indagine inquistae demonstrantur, cognitae per artis & naturae conjugium ad humanae vitae necessarium usum vario experimentorum apparata, necnon novo modo & ratione applicantur. Ad Alexandrum VII. pont. opt. max. (1678)](https://img.insideoutlibrary.com/img/200/ia-mundussubterrane02kirc-65-76.webp)
