CHAPITRE VI. OPÉRATIONS COMPLEMENTAIRES. 4l 



(419) 



+ '«';J-^r^=cos(3A + 5g- + 3/— 3A'— 3g'— 31') 



(420) 

 ^'"««JS^ 4^ 64 '" 16''' 8'«-57ïï'^i 



X cos(3/j + g- + /— 3h'— 3g'— 31') 



(421) 



+ '"'i\T-''''' + %f^'i\^M^h^ g ^ l -3h' - 3g' - M') 



(422) 



+ '"'7^--lfv^'-'^cos(3A+- + /-3A'-3^'-5/') 



(423) 



^-'^l-YW-f vvJ|cos(3A + ^+/- 3h'- 3s'- -,1') 



(424) 



+ «'15 • ^f ^'= cos(3A + g- + / _ 3/j' — 3^' — /') 



(425) 



(426) 



f,-''^ + %^'4Vo,[3h-^g^'d-3h'-3g'-3l') 



+ "''^^-^^f'"' cos{3h + g + 2I - 3h' — 3g-'— 4/') 



(427) 

 ■^'"'i\-^ree'\ cos(3A + g- + 2/- 3h'- 3g'- il') 



(428) 



+ '"'^-^^''^'cos(3A + g+3/-3A'-3g^'— 3/') 



(430) 



X cos(3Â -h g- — 3h'— 3g'— 31') 

 T. XXIX. 



