| James Hodgson - 1723
...every Oblique-angled Spherical Triangle it will be, . As the Sine of half the Sum of any two Sides, Is **to the Sine of half their Difference ; So is the Co-tangent...half the contained Angle, To the Tangent of half the** Difierence of the'oppofite Angles. > And again, As the Co-fine of half the Sura of the two Sides, To... | |
| Richard Lovett - 1766 - 525 páginas
...which folves that Problem without a perpendicular, by the following projportion, > • • % P pp 2 As **As the Sine of half the Sum of two Sides, to the** fine of half their difference ; fo is the Co-tangent of half the contained Angle, to the Tangent of... | |
| 1801 - 426 páginas
...it is contained in the following Theorems. THEOREM IV. As the sine of half the sum of two sides . Is **to the sine of half their difference, So is the cotangent of half** their contained angle To the tangent of half the difference of the other angles, I NOTE. NOTE. It"... | |
| S. M. Saxby - 1861
...When two tides and an included angle are given:— 1. As the sine of half the sum of the two side* is **to the sine of half their difference so is the cotangent of half** their contained angle to the tangent of half the difference of the other angles ; and again, 2. As... | |
| Gerardus Beekman Docharty - 1867 - 283 páginas
...the tangent of half the sum of the other two angles. And As the sine of half the sum of two sides is **to the sine of half their difference, so is the cotangent of half the** included angle to the tangent of half the difference of tlie other two angles. This is the first of... | |
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