207 
,„ T1TIX Sin. v' Cof. T Cof. X — Cof. I 
(V!i1) cS 7- = — cScraTF— 
Cof. v Cof. A — Sin . v Sin. A Cof(u + A) 
Cof. v Cof. v 
Cof.(i?+a)+Cof.z> Cof. / + Cof/' 
________________ ____________________ - • 
Cof. (u+A) — Cof.-u Cof./ — Cof . /' 1 
(VII) dat, 
Cof. / 
Cof. I 
/5 
quare 
Cot 40+0 Cot *(/-0 
ergo (B) Cot. [y + JA) = — — . 
Cot. ^ A 
Confimilem in modum «btinebitur ex æquatione (VIII ) 
„ „ , , s Cot. '(/+/") Cot. •£(/ — /") 
(C) Cot. («' + »')= 
COt. ■y A 
Per has formulas dantur Anguli v & v\ quibus fub- 
ftitutis in aequationibus (II) & (IV), reperitur u per 
Cof. V Sim A 
(D) Tang, u = - CoCu Cof ^(/ +/')Sj n . ’ atque 
Cof. / " Sin. A' 
«'per (E)Tang.« = 2 Cof . CoC i (/ + /") Sin. ~) ' 
Subflituendo denique valöres Angulorum i>, v\ u 
& u in formula (A) repedetur Angulus 0, per 
quem conflabit longitudo Poli quæfîti: Latitudo au- 
tem ipfîus obtinebitur per Cot. oj = Tang, u Sin. (0 
+ v), aut per Cot. u = Tang, u Sin. (0 -f v) aut 
per Cot. u = Tang, u Sin. ($ + v), ut aequationes 
(VJ & (W) habenr. 
5 . 6 . 
Sit exempli loco proximus tranfîtus Veneris 
per difcum Solis ad calculos revocandus, quem in 
finem elementa calculi ex Tabulis Aflronomicis, 
quæ in Celeberr. D:ni De la Lande Aftronomiæ 
2 :da Edkione comparent (recentiores enim mihi non- 
dum 
