Elements of Plane and Spherical Trigonometry: With Their Applications to Heights and Distances Projections of the Sphere, Dialling, Astronomy, the Solution of Equations, and Geodesic OperationsBaldwin, Cradock, and Joy, 1816 - 244 páginas |
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Página 73
... called the Pike of Te- neriffe be 3 miles , and the angle formed at its top be- tween the vertical or plumb line and a right line con- ceived to touch the earth in the horizon , or at the far- thest visible point , be 87 ° 46 ′ 33 ...
... called the Pike of Te- neriffe be 3 miles , and the angle formed at its top be- tween the vertical or plumb line and a right line con- ceived to touch the earth in the horizon , or at the far- thest visible point , be 87 ° 46 ′ 33 ...
Página 80
... called legs ; the side opposite to the right angle is called the hypo- thenuse . 3. A quadrantal spherical triangle has one side equal to 90 ° , or is a quarter of a great circle . 4. An isosceles , or an equilateral spherical triangle ...
... called legs ; the side opposite to the right angle is called the hypo- thenuse . 3. A quadrantal spherical triangle has one side equal to 90 ° , or is a quarter of a great circle . 4. An isosceles , or an equilateral spherical triangle ...
Página 81
... called the axis of such circle ; and the extremities of the axis , or the points where it meets the surface , are the poles of that circle . If we conceive any number of less circles , each pa- rallel to the said great circle , this ...
... called the axis of such circle ; and the extremities of the axis , or the points where it meets the surface , are the poles of that circle . If we conceive any number of less circles , each pa- rallel to the said great circle , this ...
Página 82
... called the supplementary tetraedron . And if they become spherical tetraedrons referred to equal spheres , or to different parts of the same sphere , their bases will be spherical triangles re- spectively supplemental to each other . 17 ...
... called the supplementary tetraedron . And if they become spherical tetraedrons referred to equal spheres , or to different parts of the same sphere , their bases will be spherical triangles re- spectively supplemental to each other . 17 ...
Página 99
... called a middle part ; then the two parts next adjacent , one on the right , the other on the left , [ not including the right angle ] are called adjacent parts ; and the next two , each separated from the middle part by an adjacent ...
... called a middle part ; then the two parts next adjacent , one on the right , the other on the left , [ not including the right angle ] are called adjacent parts ; and the next two , each separated from the middle part by an adjacent ...
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Términos y frases comunes
altitude angled spherical triangle azimuth base becomes bisect centre chap chord circle circle of latitude computation consequently cos² cosec cosine cotangent declination deduced determine dial diameter difference distance draw earth ecliptic equa equal equation Example find the rest formulæ given side h cos h half Hence horizon hour angle hypoth hypothenuse intersecting latitude logarithmic longitude measured meridian obliq oblique opposite angle parallel perpendicular plane angles plane triangle pole problem prop quadrant radius right angled spherical right angled triangle right ascension right line sec² secant sin A sin sin² sine solid angle sphere spherical excess spherical trigonometry star substyle sun's supposed surface tan² tangent theorem three angles three sides tion triangle ABC values versed sine versin vertical angle whence zenith