SUR LE DÉVELOPPEMENT DES TERMES ETC. 



«xK-^'.)'= i-2.cos27'-t-2cos4<7')-He'^ (^cos^>425cos5^') 



H-èe'^( 2cos(9r'-H7)-2cos(^'-9)-|cos(37'-+-^)-t-|cos(3/5r'-^)) 



3 /4 33 ^ 



-f-eV^^ -cos^'-.^cos(7'-2<7)— ^-cos(37'-4-2<7)-4-^cos(37'-2^)) 



/ 5 5 5 5 \ 



4- e'e' — cos ( 7) — - 005(7'— 7)-+--cos (-z'-*- 3<7) -t- ^ cos (7'— 3^^ 



' 5 II A 



4 — ^^05(27' — q) — ^cos(2<7'-|-37)-4-^ cos(27'-3<7)^ 



-♦-eV^^i -COS27' — COS27 — ^005(27' H-27)-t-^]cos (27' — 27)^ 

 ( — TI ( ^7) — ^ cos ( 4/7' 7 ) ) 



^cos^'— |cos(7'— 27)-t-^cos (7'-H4<5r)) ; 

 ?f/= I ^cos2<7-|-^cos47| — e^l^cos^ — ^cos5q | ; 



«,X'= ( gCOs(7'-t-7)-4-gCos(7'— 7)-»-^cos(7'-+-37)+^cos(7'-37)j 



3 3 I I \ 



^ ^ cos^ — ■jgCOs(2<5r'— 7) — cos(27'-f.3<7)— ^cos(27'-39)j 



— e*e' ^ |cos7'— ^cos(7'-^47)^ ; 



X 3 3 I I \ 



?^;^w.= ee"(^ _cos(7'-4-7)-t-gCOs(7'— 7)-t-gcos(37'-h7)-+-.^cos(3<7'-/7) j 



3 3 I 



— eV^^ gcos^' — ^0^(7 — 27) — ^cos (37'-+-37)--j^cos(3<7'-2<7) 



