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" In a right angled spherical triangle, the rectangle under the radius and the sine of the middle part, is equal to the rectangle under the tangents of the adjacent parts ; or', to the rectangle under the cosines of the opposite parts. "
Trigonometry, Plane and Spherical: With the Construction and Application of ... - Página 28
por Thomas Simpson - 1810 - 125 páginas
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The Complete Mathematical and General Navigation Tables: Including ..., Volumen1

Thomas Kerigan - 1828 - 664 páginas
...premised, the required parts are to be computed by the two following equations ; viz., 1st. — The product of radius and the sine of the middle part, is equal to the product of the tangents of the extremes conjunct2d. — The product of radius and the sine of the middle...
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A London Encyclopaedia, Or Universal Dictionary of Science, Art, Literature ...

Thomas Curtis - 1829
...complement С are adjoining, and AB and В С opposite extremes. With these explanations Napier's rules are 1. The rectangle of radius and the sine of the middle part is equal to the rectangle of the tangents of the adjoining extremes. 2. The rectangle of radius and the sine of the middle part is equal...
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The Edinburgh Encyclopædia Conducted by David Brewster, with the ..., Volumen18

1832
...is equal to the rectangle under the tangents of the adjacent extremes." 2. "The rectangle under the radius and the sine of the middle part is equal to the rectangle under the cosines of the opposite extremes." The radius being unity does not appear in the formulae....
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Elements of Geometry: Containing the First Six Books of Euclid : with a ...

John Playfair - 1832 - 333 páginas
...contained in the following PROPOSITION. In a right angled spherical triangle, the rectangle under the radius and the sine of the middle part, is equal to the rectangle under the tangents of the adjacent parts; or to the rectangle under the cosines of the opposite parts....
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Mathematical and Astronomical Tables: For the Use of Students in Mathematics ...

William Galbraith - 1834 - 428 páginas
...obtained by the following THEOREM. In any right-angled spherical triangle, the rectangle under the radius, and the sine of the middle part is equal to the rectangle under the tangents of the adjacent parts ; or to the rectangle under the COSINES of the OPPOSITE parts....
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - 1835 - 513 páginas
...angled spherical triangles are resolved with the greatest ease. RULE I. THE rectangle contained by the radius and the sine of the middle part, is equal to the rectangle contained by the tangents of the adjacent parts. RULE II. THE rectangle contained by the radius, and...
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Elements of Geometry and Trigonometry

Adrien Marie Legendre - 1836 - 359 páginas
...Making A =90°, we have sin B sin C cos a=R cos B cos C, or R cos a=cot B cot C ; that is, radius into the sine of the middle part is equal to the rectangle of the tangent of the complement of B into the tangent ot the complement of C, that is, to the rectangle of...
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Elements of Geometry: Containing the First Six Books of Euclid : with a ...

John Playfair - 1837 - 318 páginas
...contained in the following PROPOSITION. In a right angled spherical triangle, the rectangle under the radius and the sine of the middle part, is equal to the rectangle under the tangents of the adjacent parts ; or', to the rectangle under the cosines of the opposite...
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The Complete Mathematical and General Navigation Tables: Including Every ...

Thomas Kerigan - 1838
...middle part, is equal to the product of the tangents of the extremes conjunct. 2d. — Tlie product of radius and the sine of the middle part, is equal to the product of the co- sines of the extremes disjunct. Since these equations are adapted to the complements...
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Elements of Trigonometry, Plane and Spherical: Adapted to the Present State ...

Charles William Hackley - 1838 - 307 páginas
...middle part is equal to the rectangle of the tangents of the adjacent parts. 2. Radius multiplied by the sine of the middle part is equal to the rectangle of the cosines of the opposite parts. Or both rules may be given thus : radius into the sine of the middle...
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