Sit nunc 2 / -|- i — 7 , eritquc 



7 tang. 7 Cp ^ tang. (J) -f- tang. (25 ?' h- Cj)) 



— tang. (25 ?' — 0) ■+ tang. (5 j}'-h(P) 



— tang. (5 1 r - 4^) -f- tiing. (76^.-+- (p) ■ 



— tang. (76|°-.Cp). 



Pofito 2 i -4- I — 9 habebimus 



p tang. 9 <$> in tang. Cp -h tang. (ao° -+- 0) — tang. (20° — Cj)) 

 H- tang. (4.0° -f- Cp) — tang. (40*" — Cj)) 

 -f- tang. (60" -4- Cp) — tang. (60* — Cp) 

 + tang. (80° -»- (p) — tang. (80° — C|)) . 



G a NOVA 



