RESPONSIO AD QUAESTIONEM ASTRONOMICAM. .r 



In situ Infra-polari (Fig. IV) erit 



2 



Sit porro H latituJo loci , et erit 



P' + P = ^/3 — AKx 

 = » — a' 



= 208° 15' 48" 



104° 7' 54' 



I"+P__.o .. ... 



Tang. H =Tang.(5:±2) Cos. (?:±?) Cos. (^^^l) +Cot. (5:=-^) Sin. (^-±lO Sin-C-f^) (^7 

 -I^ =Tang.(^:±I^)Cot.(^^)Cos.(^:r:f)+Cot.(^^->in.(?:^^ 



'•°'-^'yir-" =T.„.("-:^°)T.....fI±B)co.. (-H)C03.(5:^)+S.. ('-^) 



Sin. {'—^) 2 2. -1 



Sit autem Tang. x = Tang. (^^^^) Tang. (^^) Cot. (^^) et erit 



/P'-^Pv /P' — P\ 



/P'_pv /P'_Pn Cos.*Tang.a-Cos.(-^)+Cos..rSin. C-^; 

 T»s. . Cos. (L_J) + sin, (^ ) =r — C^;^-^; 



/P'_P\ /P' — P\ 



Sin. X Cos. ( — j + Cos. .t Sin. (—7-^ 



Cos. ar 



Tang. (^^-=^) Tang. H Sin. (^^^ + x) 



CP' + P^ ~ Cos. a: " "" " 



(9) 



Tang. (^ -) Tang. H Cos. x 



/P'_p X 1_2 i 



Sm. (_-+.)- ^.^_ ^p;+_p^ 



( 8 ) Conf. CI. Dclambre , ylbrigi J'yliirt n. pag 2M scqq. 



C9j 01. «n SwinJen, Croi:dl/tg, der Meeikuiiilc , Ed. IL pag, 3«8. fornt, II. 



B3 



Ilaec 



