 | Edward Hatton - 1728 - 264 páginas
...is, as the Sum of the two Sides / о more lg : Is to the Difference of the two Sides lg leß lo :: So is the Tangent of half the Sum of the oppofite Angles lagaña I go: '•-' To the Tangent of half their Difference log leß Ig o : And the half Sum and half... | |
 | Benjamin Martin - 1736 - 362 páginas
...one. F Iheorem XXIX. In a Plain Triangle, As the Sum of the Legs, is to the Difference of the Legs ; So is the Tangent of half the Sum of the oppofite Angles to the Tangent of half their Difference. Dcmonftration. Let the given Triangle be —" ABC. and let it be... | |
 | 1751 - 420 páginas
...Angle : And as Radius, is to the Tangent of the Excefs of the faid Angle above half a right Angle, fo is the Tangent of half the Sum of the oppofite Angles, to the Tangent of half the Difference of the fame Angles. PROBLEM XXIV. 'Thomas Hulme, London. The Line bifefting... | |
 | Arthur Burns - 1771 - 396 páginas
...above. AXIOM IIL In all plane Triangles, as the Sum of the Legs is to the Difference of the Legs, fo is the Tangent of half the Sum of the oppofite Angles, to the Tangent of half the Diierence j half that Difference added to half the Sum, gives the greater Angle;... | |
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So is the Tangent of half the Sum of the oppofite Angles to the Tangent of half their Difference. 