| Philip Ronayne - Algebra - 1717 - 478 pages
...of Z_ А В F (г. е. the Tangent of half the Sum of the oppofite Angles.) But the Segments of the Legs of any Triangle cut by Lines Parallel to the Bafe being ("by 2. 6. Eucl. El.) proportional ; E С --ЕВ >; FA - FG; that is in Words, half the Sum of the... | |
| William Hawney - Astronomy - 1725 - 504 pages
...the Angle gad (ie the Tangent of half the difference of the oppofite Angles) but the Segments of the Legs of any Triangle cut by Lines parallel to the Bafe being proportional, eb ; ea : : cd : ' : That is in words, half the fum of the Legs, is to D 2 half half their Difference, as the... | |
| John Ward (of Chester.) - Mathematics - 1747 - 516 pages
...the ¿ GBF (ie the Tangent of half the Difference of the oppofite Angles): But the Segments of the Legs of any Triangle cut by Lines parallel to the Bafe, being (by Schol. to г. 6 Eucl. £7. ) proportional ; EC:EB : : FA : FG ; that is in Words, half the Sum... | |
| John Hamilton Moore - Nautical astronomy - 1791 - 578 pages
...Angle GBF, (that is, the Tangent of hal^the Difference of the oppofite Angles:) but the Segments of the Legs of any Triangle cut by Lines parallel to the Bafe being (by Eucl. 2. 6.) proportional as E С : С В :: FA : FG, »hat is, half the Sum of the Legs is to... | |
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