TRIGONOMETRICA, 23 



arc. A^zz 65^ 54^ 



arc. a^ in 63. 36. 45^ ' 

 Summa - "■" 132. 30. 45. 



Semifumma - ^6. 15. 22i --cofin. -- 90970=3 



SemidifFerentia - - - 2 38 37^ - - cofin. - - io7zz.b 



91077 

 69315=1:1.2. 



Deinde denuo habeantur et {A-^a^) ct b^ pro 

 cofinibus, ct pro earum difFerentia inuenienda confide- " 

 retur aequatio e — Czd^^{&x. §. 9.) eft ergo 

 arc. (A2-h^^)=:36^ 26', 40". 



Summa == 9^ ^2 55 



Semifummair: 46 6 27-V--fmus 32752=:^ 



SemidifF. .-==: 9 39 47i-- ^nus 17^^62:=^ 



2i 1224 



log. A=5io83 . 693i5=/2^ 



log. /^^ 40547 ^ l.(A24-^2-P) ^ 14^909 



91630 



1.2 =69315 log. 2A^ — ^2315 



l^^A^ 22315 ang. ad^Arr^^^.^ V. 5 i". = ii 9594 



Tentanti hunc caiculum patefcet eum pofTe contrahi, 

 fed hic voiui dudum legularum fequi , vt exemplum eo 

 perfedius fit. 



18. Datis in triangulo fphaerico ABC trihus Ja- ^'^* ^^' 



teri' 



