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 205
... obliq . eclip . > sin right ascen . from solstitial colure . 2. Var . right ascen . — var . dec . × cot ang . of posit . cos dec . Example VII , To determine the variation in right ascension Minute Variations of Triangles . 205.
... obliq . eclip . > sin right ascen . from solstitial colure . 2. Var . right ascen . — var . dec . × cot ang . of posit . cos dec . Example VII , To determine the variation in right ascension Minute Variations of Triangles . 205.
Página 206
... obliq . x cot obliq . x tan dec . 2. var . right ascen . = var . obliq . × sin 2 right ascen . * tan obliq . CHAPTER XII . Miscellaneous Problems . SECTION I. Problems with Solutions . PROBLEM I. REQUIRED the arc whose logarithmic ...
... obliq . x cot obliq . x tan dec . 2. var . right ascen . = var . obliq . × sin 2 right ascen . * tan obliq . CHAPTER XII . Miscellaneous Problems . SECTION I. Problems with Solutions . PROBLEM I. REQUIRED the arc whose logarithmic ...
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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