Subinterval 2 begins at m
C
(
α
) = 0. The
trajectory travels
around
the arc of
radius r
2
centered at
(+1,+J). It
can be
seen from
Fig.
5.14
that the final value of m
C
for this
subinterval is 1 + r
2
cos (
π
–
β
–
ζ
). By
equating this value to M
C0
, we have
M
C0
= 1 + r
2
cos (
π
–
β
–
ζ
)
= 1 – r
2
cos (
β
+
ζ
)