398384DISSERTATIO
XV. Problema
Triangulum E I O. Leyda, Harlemum, Amſtelo-
damum.
11 damum.
Per Problema XII. datur E I diſtantia inter Lei- \\ dam & Harlemum # 7049. # 2.
Ex obſervatis autem angulus O E I # 27 gr. # 11 ſcr.
Et angulus E O I # 43 gr. # 18 ſcr.
Et angulus E I O # 109 gr. # 31 ſcr.
Quare diſtantia O E inter Amſtelodamum & Lei- \\ dam dabitur # 9687. # 9.
Et O I diſtantia inter Amſtelodamum & Harle- \\ mum # 4695. # 6.
XVI. Problema
Triangulum I O ?. Harlemum, Amſtelodamum,
Alcmaria.
22 Alcmaria.
Per Problema 15 datur I O diſtantia inter Amſte- \\ lodamum & Harlemum # 4695. # 6.
Ex obſervatis autem angulus I O ? # 67 gr. # 36 ſcr.
Et angulus O I ? # 78 gr. # 2 ſcr.
Et angulus O ? I # 34 gr. # 22 ſcr.
Unde per doctrinam triangulorum dabitur O ? \\ diſtantia inter Amſtelodamum & Alcmariam # 8137. # 5.
Et I ? diſtantia inter Harlemum & Alcmariam # 7690. # 6.
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