423409DE MAGNITUDINE TERRÆ.11
Ex obſervatis angulus I A E # 121 gr. 7`.
Angulus A E I # 42 gr. 24`.
Unde angulus A I E # 16 gr. 29`.
Atque eruitur latus I E ſive diſtantia inter Harlemum \\ & Leidam # 7053, 4, 8.
Adeoque differentia inter ambas diſtantias in hoc \\ & in Problemate XXIV inventa admodum parva eſt, \\ tutoque aſſumere licebit diſtantiam inter Harlemum \\ & Leidam eſſe # 7053, 4, 8.
Snellius aliam adhuc inſtituens Gæodæſiam, deter- \\ minat eam diſtantiam eſſe # 7049, 2.
Atque poſtea adhuc ex alio calculo # 7051, 1.
Ex obſervatis angulus I A E # 121 gr. 7`.
Angulus A E I # 42 gr. 24`.
Unde angulus A I E # 16 gr. 29`.
Atque eruitur latus I E ſive diſtantia inter Harlemum \\ & Leidam # 7053, 4, 8.
Adeoque differentia inter ambas diſtantias in hoc \\ & in Problemate XXIV inventa admodum parva eſt, \\ tutoque aſſumere licebit diſtantiam inter Harlemum \\ & Leidam eſſe # 7053, 4, 8.
Snellius aliam adhuc inſtituens Gæodæſiam, deter- \\ minat eam diſtantiam eſſe # 7049, 2.
Atque poſtea adhuc ex alio calculo # 7051, 1.
Quamobrem mediam ponam inter Snellianam &
inventam in
Problemate XXIV. quæ eſt hujus Problematis XXV.
Problemate XXIV. quæ eſt hujus Problematis XXV.
Problema XXVI.
Tab. XVI. Triangulum O E V, Amſtelodamum, Leida,
Vltrajectum.
22 Vltrajectum.
Datur per Problema XX diſtantia E V inter Leidam \\ & Ultrajectum # 11589, 8.
Et ex obſervatis angulus O E V # 50 gr. 40`.
Angulus O V E # 54 gr. 10`.
Unde reliquus E O V datur # 75 gr. 10`.
Quare diſtantia O E inter Amſtelodamum & Lei- \\ dam erit # 9750, 0, 4.
Et O V diſtantia inter Amſtelodamum & Ultraje- \\ ctum. # 9280, 6, 5.
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