Spherical trigonometryJ. Noon, 1736 |
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Página vi
... perpendicular to any other Prob . 9. To graduate any leffer Oblique Circle Chap . VI . 51 52 53 55 The Stereographic Projection of the Sphere on the Planes of feveral Great Circles of the Sphere Viz . 1. On the Plane of the General ...
... perpendicular to any other Prob . 9. To graduate any leffer Oblique Circle Chap . VI . 51 52 53 55 The Stereographic Projection of the Sphere on the Planes of feveral Great Circles of the Sphere Viz . 1. On the Plane of the General ...
Página vii
... Perpendicular ; and Rules for folving all kind of Ambiguities attending them Chap . XIX . 166 Method of folving Oblique Spherical Triangles without a Perpendicular with a proper Scheme for the Demon ftration thereof ; a 2 * 18 Chap ...
... Perpendicular ; and Rules for folving all kind of Ambiguities attending them Chap . XIX . 166 Method of folving Oblique Spherical Triangles without a Perpendicular with a proper Scheme for the Demon ftration thereof ; a 2 * 18 Chap ...
Página 4
... perpendicular P ; ( viz . the Arch CB . ) : Thefe are fo named from the Lord Neper , à Scotch , Peer , who hath invented a New Method of folving Triangles thereby and is the third of the Ten Me- thods in the following Treatife . XIX ...
... perpendicular P ; ( viz . the Arch CB . ) : Thefe are fo named from the Lord Neper , à Scotch , Peer , who hath invented a New Method of folving Triangles thereby and is the third of the Ten Me- thods in the following Treatife . XIX ...
Página 11
... Perpendicular Ray RD , B Then ' tis evident by Infpection , the Point in the Sphere C , will be feen , or projected into the Point D , where the Ray of Light RD , falls perpendicular on AB , the common Section of the Plane . 2. E. D. ...
... Perpendicular Ray RD , B Then ' tis evident by Infpection , the Point in the Sphere C , will be feen , or projected into the Point D , where the Ray of Light RD , falls perpendicular on AB , the common Section of the Plane . 2. E. D. ...
Página 12
Benjamin Martin. THEOREM III . A Right Line , perpendicular to the Plane of the Projection , is there projected into a Point , where it cuts the faid Plane . Demonftration . Let the common Secti- on of the Plane be AB , And the given ...
Benjamin Martin. THEOREM III . A Right Line , perpendicular to the Plane of the Projection , is there projected into a Point , where it cuts the faid Plane . Demonftration . Let the common Secti- on of the Plane be AB , And the given ...
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Términos y frases comunes
adjacent Angle alfo Altitude Analemma Analogy Arch Azimuth Bafe Baſe becauſe BIFH Cafe Center Chords Circles of Latitude Co-fine Co-tangent Colure Complement confequently Cufp Declination defcribe Degrees Demonftration Dial Diameter Diſtance draw E. D. THEOREM Eaft Ecliptic equal Equinoctial faid fame fhall fhew find the Angle find the Hypothenufe find the Leg find the Side firft firſt folving fuch fuppofe given the Side Globe greateſt half Sum Half-Tangent Horizon Hour-Lines Houſes Interfection laft Latitude leffer lefs Longitude meaſured Meridian muſt North Numbers Oblique Circle oppofite paffeth Parallel Perpendicular Plane recline Pofition Point Pole Prime Vertical Prob PROBLEM Projection Quadrant Radius Reclining Plane Right Afcenfion Right Line Right-angled Spherical Triangles Scheme Semicircle Sine Sine of half Sphere Spherical Angle Spherical Trigonometry Sun's Tangent of half thefe theſe thofe thoſe Tropic of Capricorn Weft Wherefore whofe
Pasajes populares
Página 75 - The three angles of a spherical triangle are together greater than two right angles and less than six right angles. Let A, B, C be the angles of a spherical triangle ; let a', b', o' be the sides of the polar triangle. Then by Art. 30, a...
Página 185 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Página 186 - The cosine of half the sum of two sides of a spherical triangle is to the cosine of half their difference as the cotangent of half the included angle is to the tangent of half the sum of the other two angles.
Página 186 - The cosine of half the sum of two angles of a spherical triangle is to the cosine of half their difference as the tangent of half the included side is to the tangent of half the sum of the other two sides.
Página 186 - The sine of half the sum of two angles of a spherical triangle is 'to the sine of half their difference as the tangent of half the included side is to the tangent of half the difference of the other two sides.
Página 241 - It commences in the morning and ends in the evening, when the sun is 18° below the horizon.
Página 5 - Equinoctial (counted from the beginning of Aries) which cometh to the Meridian with the Sun or Stars, or with any portion of the Eclyptick.
Página 365 - Dialogue, adapted purpofely to the Capacities of the Youth of both Sexes ; and adorned and illuftrated with variety of Copper- Plates.
Página 75 - Side *»» is the Supplement of the Angle H, and the Angle E of the Side G D.
Página 205 - Superficies to M ; And, as two right Angles are to F, So is half the fpherical Superficies to K.