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 170
... apparent place of the body , or rs the error in altitude . Draw ms parallel to the horizon , from z the zenith draw zm , zr , and from P the pole , the meridians , Pmp , Prq , to pass through m , r , and cut the equator 170 Astronomical ...
... apparent place of the body , or rs the error in altitude . Draw ms parallel to the horizon , from z the zenith draw zm , zr , and from P the pole , the meridians , Pmp , Prq , to pass through m , r , and cut the equator 170 Astronomical ...
Página 171
... apparent and real places of the body on the parallel of declination , and the arc mr on that circle , or pq on the equator , will measure the angle mer , the corresponding error in time . The triangle msr being , of course , exceedingly ...
... apparent and real places of the body on the parallel of declination , and the arc mr on that circle , or pq on the equator , will measure the angle mer , the corresponding error in time . The triangle msr being , of course , exceedingly ...
Página 174
... apparent altitudes of the moon and sun , or of the moon and a fixed star , and their apparent distance to determine their true distance . This is an important problem in navigation , being of essential use in one of the best methods of ...
... apparent altitudes of the moon and sun , or of the moon and a fixed star , and their apparent distance to determine their true distance . This is an important problem in navigation , being of essential use in one of the best methods of ...
Página 175
... apparent place . The moon , on the contrary , is more depressed by parallax than it is elevated by refrac- M tion . Hence the true place of the moon m will be always above its apparent place . H - - - S 26. Let , then , s be the apparent ...
... apparent place . The moon , on the contrary , is more depressed by parallax than it is elevated by refrac- M tion . Hence the true place of the moon m will be always above its apparent place . H - - - S 26. Let , then , s be the apparent ...
Página 177
... apparent distance of the moon's centre from the star Regulus being 68 ° 35 ′ 13 ′′ , when the apparent alti- tude of the moon's centre was 28 ° 29 ′ 44 ′′ , the apparent altitude of the star 45 ° 9 ′ 12 ; " the moon's correction , or ...
... apparent distance of the moon's centre from the star Regulus being 68 ° 35 ′ 13 ′′ , when the apparent alti- tude of the moon's centre was 28 ° 29 ′ 44 ′′ , the apparent altitude of the star 45 ° 9 ′ 12 ; " the moon's correction , or ...
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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