Trigonometry, Plane and Spherical: With the Construction and Application of LogarithmsJ. Nourse, 1765 - 79 σελίδες |
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4th rem AC by Theor AC-BC adjacent angle AF-co-f alfo known alſo arch bafe baſe becauſe bifecting cafe chord circle co-fecant co-fine AC co-fine BC co-fine co-tangent of half common logarithm confequently COROL COROLLARY diameter dius E. D. PROP equal to half excefs faid fame fecant fecond feries fhall fides AC fince fines firft firſt fquare fubtracted fuppofed garithms given gles great-circles half the difference half the fum half the vertical Hence hyperbolic logarithm hypothenufe interfect itſelf laft leffer leg BC likewife manifeft meaſure moreover oppofite angle pendicular perpendicular plane triangle ABC progreffion propofed propofition proportion radius rectangle reſpectively right-angled Spherical triangle right-line ſhall spherical triangle ABC tang tangent of half THEOREM theſe thofe thoſe Trigonometry verfed vertical angle whence whofe