## 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.M. Hour P.M. added altitude appears applied axis azimuth base becomes calculated called centre circle column computed contain correction corresponding cosc Cosecant cosine course declination described determined Diff difference direction distance divided division elements employed equal equation error EXAMPLE expressed extremity feet figure formula give given greater half hence horizontal Hour A.M. Hour known latitude length less logarithm longitude means measured meridian method miles minutes multiplied negative object observed obtained opposite parallel passing perpendicular plane pole positive Prop proportion quantities radius reading represent result right angled triangle rule sailed scale screw Secant ship side similar sine solution spherical triangle star substituting subtracting supposed taken tangent telescope third transit triangle trigonometrical vertical wire zenith