Trigonometry Improv'd, and Projection of the Sphere, Made Easy: Teaching the Projection of the Sphere Orthographick, and Stereographick: as Also, Trigonometry Plain and Spherical; with Plain and Intelligible Reasons for the Various and Most Useful Methods, Both in Projection and Calculation; with the Application of the Whole to Astronomy, Dialling, and GeographyH.P., 1720 - 192 sider |
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Resultat 1-5 av 34
Side 29
... or Surface of the Globe , perpen- dicular to the Center of the faid Plain , or in the Pole of that great Circle , upon which C 3 the Projection is to be made , and on that Of the Projections of the Sphere Stereogra phically.
... or Surface of the Globe , perpen- dicular to the Center of the faid Plain , or in the Pole of that great Circle , upon which C 3 the Projection is to be made , and on that Of the Projections of the Sphere Stereogra phically.
Side 30
... Pole the Eye is placed , as may be illuftra- ted by the following Similitude . Suppofe a Sphere or Globe were made of Glafs , or any tranfparent Metal , on which were defcribed all the Points and Circles of the Sphere ( as Zenith ...
... Pole the Eye is placed , as may be illuftra- ted by the following Similitude . Suppofe a Sphere or Globe were made of Glafs , or any tranfparent Metal , on which were defcribed all the Points and Circles of the Sphere ( as Zenith ...
Side 31
... Poles of the World , or of the Equa 2. The Poles of the Ecliptick . 3. The Equinoctial Points Aries and Libra , where the Ecliptick cuts the Equator . 4. The Zenith and Nadir . The Circles of the Sphere , are either grea- ter or leffer ...
... Poles of the World , or of the Equa 2. The Poles of the Ecliptick . 3. The Equinoctial Points Aries and Libra , where the Ecliptick cuts the Equator . 4. The Zenith and Nadir . The Circles of the Sphere , are either grea- ter or leffer ...
Side 33
... pole of any great Circle . TH HE Pole of a great Circle is a Point every Way 90 Degrees diftant from its Periphery , for every great Circle contains 360 Degrees , and if two great Circles cut each other at right Angles , ( viz . one ...
... pole of any great Circle . TH HE Pole of a great Circle is a Point every Way 90 Degrees diftant from its Periphery , for every great Circle contains 360 Degrees , and if two great Circles cut each other at right Angles , ( viz . one ...
Side 34
... Pole ; thus the Zenith and Nadir are the Poles of the Horizon , and the Poles of the World are the Poles of the Equator , ec . CASE I. To find the Pole of the Primitive Circle . Find its Center , and that is its Pole re- quired . CASE ...
... Pole ; thus the Zenith and Nadir are the Poles of the Horizon , and the Poles of the World are the Poles of the Equator , ec . CASE I. To find the Pole of the Primitive Circle . Find its Center , and that is its Pole re- quired . CASE ...
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Trigonometry Improv'd, and Projection of the Sphere, Made Easy: Teaching the ... Henry Wilson Ingen forhåndsvisning tilgjengelig - 2015 |
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Vanlige uttrykk og setninger
90 Degrees Aftronomy alfo Altitude when Eaft ANALEMMA Angle oppofite Arch Axiom Bafe Baſe becauſe Cafe Center Chords Compaffes Complement of Latitude Conclufion crofs croſs cuts the Primitive Declination 20 12 Diameter diftant Diſtance draw the Meridian draw the Parallel Draw the Primitive Eaft or Weft Ecliptick equal Equator faid fame fhall find the Angle firft Foot fubftracted fuppofe given Angle given the Angle Given two Sides Hipothenufe Horizon Interfection Latitude 54 40 Longitude Manfion meafur'd meaſured Middle-part obferve oblique Circle Perpendicular Plain Plate 9 Point Pole Prime Vertical Primitive Circle Prob PROBLEM Projection Proportion lies Radius reprefent requir'd right Afcenfion Right Circle Right-angled Triangles Secant SECT Side oppofite Sine Comp Sine Complement South Dial Sphere Spherical Geometry Spherical Triangles Spherical Trigonometry Stile Sun's Altitude Sun's Azimuth Tang Tangent Complement thefe theſe thofe Trigonometry
Populære avsnitt
Side 10 - Then as the sum of the sides is to their difference, so is the tangent of half the sum of the unknown angles to the tangent of half their difference (Theor.
Side 17 - TWo fides and an angle oppofite to one of them being given, To find the third fide and either of the other angles.
Side 72 - Authors reckoned the 3d and 4th, where there are given two Sides and an Angle oppofite to one of them, to find the...
Side 49 - Perpendicular, let it fall from the End of a given Side, and oppofite to a given Angle...
Side 19 - ... the sum of any two sides is to their difference ; so is the tangent of half the sum of the angles opposite there, to the tangent of half their difference.
Side 36 - With the Tangent of the given Angle, and one Foot in the Center defc1 ihe an Arch.
Side 53 - RULE IV. The Tangents of the Sides, are reciprocally Proportional to the Co-fines of the Angles at the Vertex.
Side 28 - Projeftiott the Angles made by the Circles on the Surface of the Sphere are equal to the Angles made by their Reprefentatiyes on the plane of the Projection.
Side 30 - POLE, in spherics, a point equally distant from every part of the circumference of a great circle of the sphere, as the centre is a plane figure ; or it is a point of ninety degrees distant from the plane of a circle, and in a line, called the axis, passing perpendicularly through the centre. The zenith and nadir are the poles of the * horizon ; and the poles of the equator are the same with those of the sphere. POLES of the ecliptic, are two points on the surface of the sphere, 23° 30' distant...
Side 55 - Log-Sines of that half Sum and Remainder, half the Total of thefe four Logarithms is the Sine Complement of half the Angle required.