Geography Reference
In-Depth Information
dB
2
4
6
8
10
(30)
1
A
sin
A
sin
A
sin
A
sin
A
sin
2
4
6
8
10
Kd
0
where
3
27
729
4329
381645
2
4
6
8
10
A
e
e
e
e
e
2
2
8
128
512
32768
21
621
11987
757215
4
6
8
10
Ae
e
e
e
4
8
64
512
16384
151
775
621445
6
8
10
(31)
A
e
e
e
6
32
32
8192
1097
57607
8
10
A
e
e
8
128
1024
8011
512
10
A
e
10
Multiplying
K
and integrating at the both sides of (30) give the inverse expansion of
rectifying latitude as
B
a
sin 2
a
sin 4
a
sin 6
a
sin 8
a
sin 10
(32)
2
4
6
8
10
where
3
3
213
255
20861
2
4
6
8
10
a
e
e
e
e
e
2
8
16
2048
4096
524288
21
21
533
197
4
6
8
10
a
e
e
e
e
4
256
256
8192
4096
151
151
5019
6
8
10
(33)
a
e
e
e
6
6144
4096
131072
1097
1097
8
10
a
e
e
8
131072
65536
8011
2621440
10
a
e
10
3.1.2. The inverse expansion of the conformal latitude
Differentiating the both sides of (10) yields
2
d
1
e
dB
(34)
cos
2
2
(1
e
sin
B
) cos
B
Therefore, it holds
2
2
dB
(1
e
sin
B
)cos
B
(35)
d
2
(1
e
) cos
