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" Oblique spherical triangles sin A sin B sin C sin a ~~ sin b sin c cos a = • cos b "
A Collection of Tables and Formulæ Useful in Surveying, Geodesy, and ... - Page 6
by Thomas Jefferson Lee - 1853 - 242 pages
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Mathematical Exercises ...

Samuel H. Winter - 1864 - 348 pages
...sides of the primitive triangle. In any spherical triangle ; Cos a = cos b cos c + sin b sin c cos A. Sin A : sin B : sin c :: sin a : sin b : sin c. Cot a sin b = cot A sin c + cos b cos c; cos A = — cos B cos c + sin B sin c cos a. c,. , / (sin...
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Archiv der Mathematik und Physik

Mathematics - 1864 - 578 pages
...dritten und die Summe der Sinus i Winkel immer grüsser als der Sinus des dritten Winkelt es ist immer: Sin a + Sin b > Sin c, Sin A + Sin B > Sin C. 2) Ist der Umfang eines Dreieckes grosser oder kle 180°, so ist immer beziehungsweise: Cos'i/l + Cos'iß...
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Mathematical Exercises ...

Samuel H. Winter - 1867 - 468 pages
...primitive triangle. A + B + C>7T<37T. In any spherical triangle ; Cos a = cos b cos c + sin b sin c cos A. Sin A : sin B : sin c :'. sin a : sin b : sin c. Cot a sin b = cot A sin c + cos b cos c; cos A = — cos B cos C + sin B sin c cos a. o- i / fsin (s...
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Elements of Trigonometry, Plane and Spherical

Lefébure de Fourcy (M., Louis Etienne) - Trigonometry - 1868 - 350 pages
...and b, and reciprocally, or into C and c, and the reverse, we conclude, that -: = —: ;- = —: (4) sin A sin B sin C sin a sin b sin c SOLUTION OP TRIANGLES. 87 156. 3d. Relation between two sides, the angle included by them, and the...
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The elements of plane and spherical trigonometry. [With] Key

William Rossiter - 1868 - 186 pages
...B, C, and the three sides by a, b, c. Formulae. ,, , sin A _ sin B _ sin C. sin a sin b sin c ' or, sin A : sin B : sin C :: sin a : sin b : sin c. (2.) cos C = ,„ , r, cos c—cos a cos b (3.) (4.) (5.) (6.) (7.) (8.) tan sin a sin b . (s—a)...
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Pure mathematics, Volume 2

Edward Atkins - 1875 - 410 pages
...59. Tan A tan 1 + tan Atan + tan — . tan - = 1. 4 2 BC 205 206 PLANE TRIGONOMETRY. 60. Cos 3 -2. 2 (sin A + sin B + sin C) (sin A + sin B — sin C) 4 sin B sin 0 61. Tan 2 A (sin A + sin C — sin B) (sin A + sin B — sin C) (sin A + sin B + sin...
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Plane and Spherical Trigonometry

Henry Nathan Wheeler - Trigonometry - 1876 - 218 pages
...B) ~ tan \ (B + A - 90°) ' (*) c = --- ^ .. . cos (B + A) ,[9] - cos (B - A) The General Triangle. sin A sin B sin C sin a sin b sin c § 18. * cos a = cos b cos c + sin b sin c cos A. [11] [10] § 19. * — cos A = cos B cos C — sin...
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Mathematical Exercises ...: Examples in Pure Mathematics, Statics, Dynamics ...

Samuel H. Winter - 1877 - 452 pages
...sides of the primitive triangle. In any spherical triangle ; Cos a = cos It cos c + sin b sin c cos A. Sin A : sin B : sin c : ; sin a : sin b : sin c. Cot a sin b = cot A sin c •+ cos b cos C; cos A = — cos B cos c + sin B sin c cos a. Sin iA = A...
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De Zee, Volume 4

Shipping - 1882 - 526 pages
...cos b sin c — 2 sin AcosB cos C sin a cos b cos c -f- 2 cos A sin B cos C cos a sin b cos c — 2 sin A sin B sin C sin a sin b sin c — 2 sin A cos A sin b cos b -j- 2 sin B cos B sin a cos a i= o Op deze vergelijking, die verkregen...
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Correspondenz-Blatt für die Gelehrten- und Real ..., Volume 29; Volume 1882

Education, Secondary - 1882 - 544 pages
...-{- I' sin b) (cos a -j- I sin a) metrie; durch Entwicklung des Vectortheils findet man die andere sin a : sin b : sin c = sin A : sin B : sin C. Hinsichtlich der weiteren Ausführung und Anwendung der Quaternionen sind zu nennen: Hauke l, Theorie...
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