CALCULATIONS TO ASCERTAIN TIIE
TRA CT 26
54
Rings
1
1 Radii.
Sum ofPerps.
3-f 2 =Sum ofTangs.
Sum ofDiffs.
I
333^
10
0-030
2
1000
15
15
3
10 o '7
5
3
12
7667
40
5
13
8333
60
7
14
gooo
100
11
15
9667
200
21
16
10333
lt)60
190
17
11000
3720
338
18
II667
577 O
495
39
12333
7260
573
20
13000
892 O
086
3. For the sum of the sines above
2'374 = sumof the tangents, or sum of the sines,as the diff. between them are no-thing in this quadrant.
4. For the sum of the sines aboveo in the s.k. quarter
Rings
Radii.
Sum ofPerps.
3-2 =>um ofTangs.
Sum ofDiffs.
16
10333
10
0001
17
11000
230
21
18
1166'7
830
71'
19
12333
1450
11s
20
13000
2130
164
0375 = su. uof the tangents, or of the sines, thediff. being nothing.
5. For the sines below o in the N.w. quarter.
1
1
2
3
6
3667
145
0040
7
4333
970
224
8
5000
2370
474
,
9
5667
4325
76’3
1
1
1
10
6333
5910
933
1
1
1
ll
7000
73 20
1-0/4
1
1
1
12
7667
9280
1-210
2
1
1
13
8333
10140
1-219
2
1
1
14
9000
10700
1-078
1
1
1
15
966'7
11580
1-198
1
1
1
16’
10333
11970
l-15<j
1
1
1
17
11000
12250
i'105
1
1
1
18
11667
12280
1-052
1
1
1
19
12333
12750
1-034
1
20
130QO
13940
10/2
1
6 7 8 Q io 11 12
11
1 11 1
1
1 1
11
1 1
1 .
1 1
1111
1111
1111
13-C35 = sum of the tangents.'101 — sum of the differences.
13-534 = sum of the sines.
5
6
7
9
109109
10
10
88
•101