## A Treatise on Trigonometry, Plane and Spherical: With Its Application to Navigation and Surveying, Nautical and Practical Astronomy and Geodesy : with Logarithmic, Trigonometrical, and Nautical Tables, for the Use of Schools and Colleges |

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### Common terms and phrases

A A B B C C A.M. Hour P.M. azimuth called centre circle colatitude collimation column computed correction Cosecant Cotangent Secant course decimal declination determined diagram Diff difference of latitude difference of longitude Dist divided equal equation error example expressed feet formula Geom given number Greenwich half hence horizontal Hour A.M. Hour hour angle Hour P.M. Sine hypothenuse instrument intersection limb logarithm longitude magnetic means measured meridian meridian altitude miles multiplied Nautical Almanac number of degrees object observed obtained parallax parallel perpendicular plane sailing plane triangle polar distance pole Prop proportion quadrant radius refraction right angled triangle right ascension sailed screw semidiameter ship siderial sine and cosine solution spherical triangle Spherical Trigonometry spirit level star subtracted supporting axis TABLE XXVII tangent telescope theodolite transit trigonometrical lines vernier vertical wires zenith distance