DE TRIGONOMETRIE SPHEROIDIQUE. 52t> 



l.sin. Z=g.8i4o223 



1. COS. Z = 9. 8799610 — 1. sin.^Z^ 9. 6280446 — 



1. cet. (p = 1.9566915 l.sin.>i' = 9. 8395782 



1.6506748 — 9.4676228 — 



= — 44)7378'o = — Oj2935o9 



— 0,293509 



M=— 45,o3i3i9 log.M=i.6535i47 — 

 Evaluant ensuite 



cos.>.„=cos.'X'sin.Z, cos.Co'^^ ^'."" ., , cos. (7„"=^!^^ 



sm.X„ sin.Xo ' 



on trouvera 



\ = 6S\rj8i6",go; <7;=42',6875",92, g;=43s4746",3i. 



Au moyen de ces valeurs la série (F) donnera, à cause de 



c,," — (7„' = ']8jo'\3g centésimales , 



log-('o"— 0=3.8959963 3.89600 . 



log.-^ 6:=: 7. 5 126590 log-ri E^ = 4- 4^326 1(2) 



1. COS. X,^ 9. 67298 18 g. 67298 ) 



1.0816371 l.sin.'X = 9. 89109 



=:i2",o68 7.88333 — 



= — o",oo76 



(2) =7.99224- _o,o589 



, log. 6 = 0.77815 



8 . 77o3g — =: — o",o589 

 log. 7j 6° COS. >.oSin.°>„=3. 98733 



c. log.sin. i"==5 . 8o388 

 log- 7=9 -69897 



— o ,o665 



4- 12,068 



2' terme =+ 12,002 



9-49°^^ 9-490ï8 



log. 2 5„'=:r9.98843; 1. sin. 2 (r„" ==9. 99081 — 



9.478614- 9.48099 — 



=:H-o",3oio3 :=: — -o",3o26g 



+ o ,3oio3 



3' terme=' — o ,00166 



