144 O 11 I A K I 



4 cospL VO / V6.8 6 / 



_ F'-D" /ilM _^_Zt p'H-^t p^-t p*) H- ec-. 1 

 \6.8.io b.ii ^ b ^ W J 



r=^ tang_prp,vjj8_pT£),. /7_tp^)H-ec. 

 6 cos p L V8 / 



ec. 



'=JLrF'D''-F"D'-/?_cotp^)-t-F"'D"(|4-5'=otp'-^c«^tp')-ec. 1 

 senpL \3 / \o.o o /J 



"= ' . JLrF"D'''-F"'D''/4_cotp^)-+-F'^D'^(i^_|cotp^-HCOtp*|- ec.J 



"S'senpL" ~ " V7 W V7-9 7 



ec. 



0'"=;. -i::_rF"'D'*— F'D''(-— cotp'WF''D"°/— --cotp'-HCotp^j-ec ] 



avremo 



»H-costante=z — fu-+-f'senycosy — f "sen ucost/'n-f "sent/ cosy' — ec. 



[II III -1 



(CO I 



c . -t- r •+- ec. I 

 cos u cos 1/ J 



Pongasi ora (§17) 



A' = 1 r 5 . -^ -+- ec. 



2, I 2' 1.2 2. 1.-2.5 2. 



a' I a* 1.^ 2' 1.2.3 a' 



^, f" 6 r''_6.q f^ 6 ir.Ti T' _-- 

 ti'=— .-^ -t- — •-: r- • TF "^ ^^* 



a* I a' i.a a' i.a.3 a' 



II 



ec. 



