A New Treatise on Surveying and Navigation, Theoretical and Practical: With Use of Instruments, Essential Elements of Trigonometry, and the Necessary Tables, for Schools, Colleges, and Practical Surveyors |
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ABCD acres altitude angle of elevation base line bearing chains chord circle circumference column compass computed convex surface cos.a cos.b cos.m cos.S Cosine Cotang decimal degrees determine difference of latitude divide double area draw equal equation EXAMPLES feet field find the angle find the area formulæ frustum Geom given line given point Hence horizontal angle hypotenuse inches instrument latitude latitude and departure logarithm longitude measure meridian miles N.sine needle object observer parallax parallel perpendicular Prob PROBLEM Prop proportion quadrantal radius Required the area Required the solidity right ascension right-angled spherical triangle Robinson's RULE.-Multiply segment sextant ship side sin.a sin.b sine slant height Solar Compass SPHERICAL TRIGONOMETRY square station subtract sun's survey Tang tangent tangent screw telescope theodolite trapezium triangle ABC Trig Trigonometry tude vernier vertical Whence