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 134
... sun - dial , that is , a figure , the dif ferent lines of which , when the sun shines , indicate by the shadow of a style or gnomon the time of the day . 2. The general principles which serve as a basis to the theory of dialling ...
... sun - dial , that is , a figure , the dif ferent lines of which , when the sun shines , indicate by the shadow of a style or gnomon the time of the day . 2. The general principles which serve as a basis to the theory of dialling ...
Página 135
... sun appears to move Equator Lat ТИ ПА xis e round the earth , which is in the centre of the visible heavens , in 24 ... sun and with each meridian , would fall upon every par- ticular meridian and hour when the sun came to the plane of ...
... sun appears to move Equator Lat ТИ ПА xis e round the earth , which is in the centre of the visible heavens , in 24 ... sun and with each meridian , would fall upon every par- ticular meridian and hour when the sun came to the plane of ...
Página 136
... sun , may , in reference to this branch of inquiry , be regarded as a point , if a small sphere of glass , or a small sphere con- stituted of a wire axis and wire hour circles , be placed upon any part of the earth's surface , so that ...
... sun , may , in reference to this branch of inquiry , be regarded as a point , if a small sphere of glass , or a small sphere con- stituted of a wire axis and wire hour circles , be placed upon any part of the earth's surface , so that ...
Página 142
... sun's rays meet with no obstructions , that luminary will shine upon it from his rising to his setting . The theorems from which the construction is to be deduced are , tan мb sin L tan P , and sin Esin L. se Here мb is the measure of ...
... sun's rays meet with no obstructions , that luminary will shine upon it from his rising to his setting . The theorems from which the construction is to be deduced are , tan мb sin L tan P , and sin Esin L. se Here мb is the measure of ...
Página 154
... ... ( 10. ) And when L = 0 , as is always the case with the sun , we have cos / cos @ = = cos i secd .... ( 11. ) tan a cos d ( 12. ) tan / cosi .... cos l = cos a cosd .... ( 13. ) sin d = sin 7 sin i .... ( 14. 154 Astronomical Problems .
... ... ( 10. ) And when L = 0 , as is always the case with the sun , we have cos / cos @ = = cos i secd .... ( 11. ) tan a cos d ( 12. ) tan / cosi .... cos l = cos a cosd .... ( 13. ) sin d = sin 7 sin i .... ( 14. 154 Astronomical Problems .
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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