PAR M. PLANA 



H-è^e'^l ^cos7'-*-|cos(7'— 2^) — |cos(3^'-4-2<7) — |cos(37'--2<7) j 

 - cos ( <jf' — 2^ ) -+- -g- cos ( ^'h- 4<7 ) j ; 



■4-ee'^^cos(<7'-l-<7) — cos(^'— ^)-+-cos(3<7'-4-^) — cos(3<7' — ^) ^ 

 -rc'e'^ ^ cos^'-h ^. cos(7'-r 2<7 ) — ^ cos(3(7'-+..2^)-h| cos(3<7'—- 2<7)^ 



-+?"eV*^ r -4-cos2<5r' — cos 3<^ — ^cos(2<j('-4-2<jf) — ( 2<r/' — ^7)^ 



/ 5 5 5 5 \ 



-f-e'V/ - cos^ -f- g cos(2^'— ^)— - cos(27'-h37) — ^ cos(2<'/' — 37) j 



-+-ee'^^ |cos(2</'- <7)-f-^cos(47'-f-'7)^ ; 



^cos(7'-4-7)-h^cos(^'— — ^cos(7'-h3</)-^cos(7'-3^) j 



— -eV^^-^ cos^ — 2cos(2^'— ^) — ^cos(2^'H-3^)-H,^cos(2^' — iq) ^ 



-t-ee'^ / -cos(^'-f-7)-4--cos(^' — ^) — -cos(2^'-H^)--cos(3^'-9)\ 



\ 2 ' 2 2 3 / 



-!-eV^^ ^cos f/ — |cos(^' — 2<7) — ^cos(3^'-f-2.^)+-^ 005(37'- 27)^ 



-HeV* ^cos (27'-*- 2^) — cos (127' — 27)^ 



— ee'^^ -^cos*/ — 005(27'— ^)-H.^cos(47'-+-7)^ 



— e'e^ ^ icos^'— cos(7'— 27)-f-|cos(7'-4-47)^ ; 



