A Series on Elementary and Higher Geometry, Trigonometry, and Mensuration, Containing Many Valuable Discoveries and Impovements in Mathematical Science ...: Designed as a Text Book for Collegiate and Academic Instruction, and as a Practical Compendium on MensurationCollins brothers & Company, 1845 |
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Página 7
... plane , is a circle . This granted , a great circle is a section which passes through the centre ; a small circle , one which does not pass through the centre . 4. A plane is tangent to a sphere , when their surfaces have but one point ...
... plane , is a circle . This granted , a great circle is a section which passes through the centre ; a small circle , one which does not pass through the centre . 4. A plane is tangent to a sphere , when their surfaces have but one point ...
Página 8
... planes of a solid angle , whose vertex is the centre . The base of the pyramid is the spherical polygon intercepted by the same planes . 12. A zone is the portion of the surface of the sphere in- cluded between two parallel planes ...
... planes of a solid angle , whose vertex is the centre . The base of the pyramid is the spherical polygon intercepted by the same planes . 12. A zone is the portion of the surface of the sphere in- cluded between two parallel planes ...
Página 9
... plane , is a circle . Let AMB be a section , made by a plane , in the sphere , whose centre is C. From the point C , draw CO perpendicu- A lar to the plane AMB ; and different lines CM , CM , to different points of the curve AMB , which ...
... plane , is a circle . Let AMB be a section , made by a plane , in the sphere , whose centre is C. From the point C , draw CO perpendicu- A lar to the plane AMB ; and different lines CM , CM , to different points of the curve AMB , which ...
Página 10
... planes AOB , AOC , COB , to be drawn ; those planes will form a solid angle at the centre O ; and the angles AOB , AOC , COB , will be measured by AB , AC , BC , the sides of the spherical triangle . But each of the three plane angles ...
... planes AOB , AOC , COB , to be drawn ; those planes will form a solid angle at the centre O ; and the angles AOB , AOC , COB , will be measured by AB , AC , BC , the sides of the spherical triangle . But each of the three plane angles ...
Página 12
... plane angles AOB , BOC , COD , & c .; and the sum of these angles must be less than four right angles ; which is ... plane AMB , A is perpendicular to all the straight lines CA , CM , CB , & c . , drawn through its foot in this plane ...
... plane angles AOB , BOC , COD , & c .; and the sum of these angles must be less than four right angles ; which is ... plane AMB , A is perpendicular to all the straight lines CA , CM , CB , & c . , drawn through its foot in this plane ...
Outras edições - Ver tudo
A Series on Elementary and Higher Geometry, Trigonometry, and Mensuration ... Nathan Scholfield Pré-visualização indisponível - 2018 |
A Series on Elementary and Higher Geometry, Trigonometry, and Mensuration ... Nathan Scholfield Pré-visualização indisponível - 2018 |
A Series on Elementary and Higher Geometry, Trigonometry, and Mensuration ... Nathan Scholfield Pré-visualização indisponível - 2018 |
Palavras e frases frequentes
abscissa altitude arithmetical progression axes base bisected chord circle circular circular segment circumference cone conjugate axis construction convex surface corresponding cosec cosine cylinder described diameter distance divided draw drawn ellipse equal to half equation expression feet find the solidity formed formula Geom geometrical given height hence hyperbola inches infinite series latus rectum length logarithm major axis middle frustum minor axis multiplied ordinate parabola paraboloid parallel parallelogram perpendicular plane portion prism PROBLEM Prop PROPOSITION pyramid quadrant quantity radii radius ratio rectangle revoloidal surface right angles Scholium sector segment sides similar similar triangles sine specific gravity sphere spherical triangle spheroid spindle square straight line tangent THEOREM tion transverse axis Trigonometry ungula versed sine vertex vertical virtual centre zone
Passagens conhecidas
Página 44 - Prove that parallelograms on the same base and between the same parallels are equal in area.
Página 197 - ... is such, that all straight lines drawn from a certain point within the figure to the circumference are equal to one another : 16. And this point is called the centre of the circle.
Página 81 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Página 219 - To find the solidity of a hyperbolic conoid, or otherwise called a hyperboloid. RULE. To the square of the radius of the base, add the square of the diameter...
Página 68 - In the same way it may be proved that a : b : : sin. A : sin. B, and these two proportions may be written a : 6 : c : : sin. A : sin. B : sin. C. THEOREM III. t8. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference. By Theorem II. we have a : b : : sin. A : sin. B.
Página 14 - ... this point of intersection, as a pole, and limited by the sides, produced if necessary. Let the angle BAC be formed by the two arcs AB, AC ; then it will be equal to the angle FAG formed by the tangents AF, AG, and be measured by the arc DE, described about A as a pole.
Página 27 - The circumference of every circle is supposed to be divided into 360 equal parts...
Página 36 - The solidity of a cylinder is equal to the area of its base multiplied by its altitude.
Página 7 - The radius of a sphere is a straight line, drawn from the centre to any point of the surface ; the diameter, or axis, is a line passing through this centre, and terminated on both sides by the surface.