88 A NEW METHOD OF DETERMINING 
From the latter we have 
(a) =1-20 + FS + +8. a 
Hence 
Gy oS) Ca, 
Fie tae 
If we put 
Wee i <2 a mn 2. “6 S cos f + a. ne sin f, 
we have 
& 14 W+h(e). 
dt 
lnc 
We have yet to express |, in terms of the elements. 
From 
ie SO 5 ‘ 9 cos ? 
Sil 3Q2 — 24 cosy. sy SS 
COS 79, 
and from 
iy Oe 
ie GB” 
Vi 
1) S—= 5 
No 
we have 
h = n y COS ¥o 
a “cos ¢ ’ 
(21) 
