Musschenbroek, Petrus van, Physicae experimentales, et geometricae de magnete, tuborum capillarium vitreorumque speculorum attractione, magnitudine terrae, cohaerentia corporum firmorum dissertationes: ut et ephemerides meteorologicae ultraiectinae

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426412DISSERTATIO
Problema XXXI.
Triangulum M V L, Oude-Watera, Vltrajectum,
Bommelia.
11
Ex Problemate XXII. datur V M diſtantia inter \\ Ultrajectum & Oudewateram # 4965, 2, 7.
Ex obſervatis autem angulus V M L # 65 gr. 23`.
Et angulus M V L # 82 gr. 30`.
Unde reliquus V L M # 32 gr. 7`.
Quare per doctrinam Triangulorum dabitur L M, \\ diſtantia inter Oude-Wateram & Bommeliam # 9259. 6, 1.
Et V L diſtantia inter Trajectum & Bommeliam # 8490. 6, 4.
Problema XXXII.
Trangulum R V L, Dordracum, Trajectum, Bommelia.
22
In Problemate XXI, datur V R diſtantia inter \\ Dordracum & Trajectum # 11749, 9.
Ex obſervatis autem angulus R V L # 62 gr. 16`.
Angulus V R L # 44 gr. 4`.
Unde reliquus angulus V L R # 73 gr. 40`.
Hinc ope doctrinæ Triangulorum invenietur R L \\ diſtantia inter Dordracum & Bommeliam. # 10812, 7.
Problema XXXIII.
Triangulum E V L. Leida, Trajectum, Bommelia.
33
Datur per Probl. XXI. E V diſtantia inter Leidam \\ & Trajectum # 11589, 8.
Datur per Probl. XXXI, V L diſtantia inter Tra- \\ jectum & Bommeliam # 8490, 6, 4.
Et ex obſervatis angulus E V L # 116 gr. 41`.

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