Elements of trigonometry, plane and spherical. Adapted to the present state of analysis. To which is added, their application to the principles of Navigation and nautical astronomy. With logarithmical, trigonometrical, and nautical tables |
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Términos y frases comunes
adjacent apparent altitude applied arith called celestial object celestial sphere centre chord circle colatitude comp complement correction cosecant cosine Cotang decimal declination departure determine diff difference of latitude difference of longitude direct course dist divided equation EXAMPLE expressed formula Geom given number given side Greenwich hence horizon hour angle hypothenuse included angle logarithm meridian altitude middle latitude miles multiply Napier's rules Nautical Almanac number of degrees observed altitude obtained parallax in altitude parallel parallel sailing perpendicular plane sailing plane triangle pole Prop proportion quadrant quotient radius refraction right angled triangle right ascension secant second member semidiameter ship side opposite sin a sin sine solution spherical triangle spherical trigonometry substituting subtract tance Tang tangent three sides tion trigonometrical lines true altitude tude