. Trigonometria. 2 9.;9869°54? The two fides, together with their oppofite angles thus found, the third fide may be ob-tained in this manner. As the fine of half che difference of the angles 3 °To the fine of halt the fumme of the angles 53Sothe tangent ol half the difference of the fides 3 To the tangent of half the other fide 15 P R^O B L. z. Two fides, -with the angle comprehended by them given, to find the other fide. For the folution of this, and moft of the fubfequent
. Trigonometria. 2 9.;9869°54? The two fides, together with their oppofite angles thus found, the third fide may be ob-tained in this manner. As the fine of half che difference of the angles 3 °To the fine of halt the fumme of the angles 53Sothe tangent ol half the difference of the fides 3 To the tangent of half the other fide 15 P R^O B L. z. Two fides, -with the angle comprehended by them given, to find the other fide. For the folution of this, and moft of the fubfequent are rcqliiredtwo ,is to be reduced into two rectangulars,by a perpendi-cular drawn from the extremity of the fide known,& whereit may upon the fide inquired, or oppofite to the inquired§ angle. Therefore in thefe rectangular triangles, whofeparts in the one do anfwer to the like parts in the other, ifthey be all known, the feveral parts of the Obliquangular fhall.
Size: 1921px × 1301px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1600, bookdecade1650, bookidtrigonometri, bookyear1658
