. Trigonometria. At the Radius-,►§ yTo the tangent of the Hypotenufa:8 j So the cofine of the angle giveny%(.To the tangent of the firfi 2 For Si Triwwmetria Britannic a. o2 For the fide inquired, by the 5 Confett. As 1 he cofine of the Hypotenufa, ? ^ So th e cofine of the other fide. To the 10fixe ofthe firft bafe : £lTo the cofine of the other fegment. If the perpendicular fall within the triangle, the fnmme of the bales, if] without their diffe-rence is the fide inquired. Jlhtftration eyirithmetical. As the Radius R S 90 To the tangent of D C=S T 30 So the cof

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. Trigonometria. At the Radius-,►§ yTo the tangent of the Hypotenufa:8 j So the cofine of the angle giveny%(.To the tangent of the firfi 2 For Si Triwwmetria Britannic a. o2 For the fide inquired, by the 5 Confett. As 1 he cofine of the Hypotenufa, ? ^ So th e cofine of the other fide. To the 10fixe ofthe firft bafe : £lTo the cofine of the other fegment. If the perpendicular fall within the triangle, the fnmme of the bales, if] without their diffe-rence is the fide inquired. Jlhtftration eyirithmetical. As the Radius R S 90 To the tangent of D C=S T 30 So the cofine of O S, 9-90723317 To the tangent of OP=DB 25 II. As the cofine of D C, viz,. C G 60 9-9 37 5 3 °6? To the cofine of DB,ws, BE 65 So the cofine of AC, viz,. CM *Tothecofineof AB,viz,.BN Therefore the fegment A B is ThefegmentDB 25. ThsfummeofthefegmentsAD The fide inquired. The Traxis for the fide A D, in the triangle of the fecondScheam. As the Radius R S 90 To the tangent of the 2 So the c

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Keywords: ., bookcentury1600, bookdecade1650, bookidtrigonometri, bookyear1658