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adjacent Angle Amplitude Angle ACB Angle BAC Angle of Position Barbadoes Brass Meridian Cafe Center Chapter Column Compass Course and Distance Departure Diameter Diff Difference of Latitude Difference of Longitude Dominical Letter draw East Easterly Ecliptic Epact equal Equator Equinoctial Example fame Feet find the Sun's Foot given Angle Globe hath Horizon Hour Hypothenuse AC Inches Lati Leagues Leg BC Line Lizard Logarithm Longitude the Ship measured Merid Meridian Altitude North Number Oblique Circle Oblique Spheric Triangle Oblique Triangle parallel perpendicular Plane Plane Sailing Plate Point Pole Primitive Circle Prob Proportion Quadrant of Altitude Radius Remainder Right Ascension Right Circle Right-Angle Rule Rumb Sailing Section shew Ship's Sine Complement Sine Tangent Secant Solid Content South Latitude Spheric Geometry Spheric Trigonometry Star Star's subtract Sun's Altitude Sun's Azimuth Sun's Declination Sun's Place Tangent Complement Trigono tude Vertex West Westerly
Page 125 - We infer from this that a triangle can be constructed with three given lines as sides, when the sum of any two sides is greater than the third side.
Page 165 - AZIMCTR circles, called azimuths, or vertical circles, are great circles of the sphere, intersecting each other in the zenith and nadir, and cutting the horizon at right angles in all the points thereof.
Page 155 - ... globe. A Strait is a narrow part of the ocean lying between two shores, and opening a way into some sea, as the Straits of Gibraltar that lead into the Mediterranean Sea. A Creek is a small narrow part of the sea or river, that goes up but a little way into the land.
Page 142 - ... the angle CGH (1. PI. Tr.): But since CG, HG are at right angles to DGB, which is the common section of the planes CBD, ABD, the angle CGH will be equal to the inclination of these planes (6.
Page 107 - Difference of Latitude, is to the Difference of Longitude ; fo is the Sine Complement of the Middle Latitude, to the Tangent of the Courfe, or more briefly thus : As Diff.
Page 228 - ... as the radius is to the tangent of the latitude ; so is the tangent of the sun's declination to the sine of the ascensional difference sought. This, converted into time, shows how much he rises...
Page ii - Navigatio Britannica: or, a complete System of Navigation, in all its Branches, both with regard to theory and practice; containing Geometry, Plane and Spherical Trigonometry, Astronomy, and the doctrine of the Sphere, &c.
Page 141 - Is to the cosine of half their difference, So is the cotangent of half the contained angle To the tangent of half the sum of the other angle*.