. Trigonometria. r tangent, which being lefle, commeth neareft tothe fine or tangent given, fofoall you have the correfpondent arch to the thoufandth part ofa degree; Thus the arch anfwering to this fine , is o degrees, 43 5 parts, or if thearch anfwering thereunto, be yet more exactly required, deduct the difference which ftand-cch againft the fine or tangent in the Table, next lefle to the fine or tangent given from the faidline or tangent given, the remainer fhall be the Logarithm of the degrees and parts required. EXAMPLE. The fine in the table, next leffe , the fine
. Trigonometria. r tangent, which being lefle, commeth neareft tothe fine or tangent given, fofoall you have the correfpondent arch to the thoufandth part ofa degree; Thus the arch anfwering to this fine , is o degrees, 43 5 parts, or if thearch anfwering thereunto, be yet more exactly required, deduct the difference which ftand-cch againft the fine or tangent in the Table, next lefle to the fine or tangent given from the faidline or tangent given, the remainer fhall be the Logarithm of the degrees and parts required. EXAMPLE. The fine in the table, next leffe , the fine given is , andthe diffe-rence anfwering thereunto is , which being fubtracted from the finegiven, theremainer , is the Logarithm of 4 the parrs required. The form and hrft ufe of the Table of fines and tangents being thus explained, the fecond•olloweth, vn,, their ufe in the eafie folution of all triangles, whether Plain or Spherical. 1 he End of the Firjl Bco\. 43.
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Keywords: ., bookcentury1600, bookdecade1650, bookidtrigonometri, bookyear1658
