104. A NEW METHOD OF DETERMINING 
The values of 7) and 6“ are readily found from 
f=14+3 @—(2e—té4 74 6)cosy—(se —1 eH + gs &) cos2y 
—(4¢é— &) cos 3 y — ete. 
> ee Neosiziy. 
We have 
BOSilpee 
R® =—(2e—Fe 4+ ge &) 
)) — iL 4 6 
RO=—Gé—fe+ we) 
R=—Ge—he ) 
Cy = ete. 
d RO 
Ge de 
d RY 2 Ba 6 
5 ae (CO a a) 
GLO So, Ih 8 
de S—(0@— 3 e+ ee) 
ad k® 2 4 
Ge 7 (Zé ay cz Ze) 
GO 2 BAB 
de aa G € ¢ ) 
ete = Cte: 
For 7” we have 
(2) Crs? Car 3) 
G 
" —G=1e4%9 C 
SS Og ca, Oar Oe @ a ee) 
or 
(9 Se he ade, (34) 
For 6 we get at once 
