C—la.

Least-square Calculation of Polygon.

4—C. la.

25

1. No. of Angle. 2. Observed Spherical Angles.* 3 4. 5. 6. Centre Spherical Corrected LeastAnnies ' Spherical Plane square j Excess. Angles. Correction. Einal Plane Angles. 8. Cot. 9. a, 6, e. 10. Value -1*. 11. Natural 12. Sines of j 6x 10. Column 5. ! 13. Natural Sines I „., ' of Column 7. I Sldes - 15. Links. 1. 2 3 45 46 87 58 16 45 30-373 14-113 17-523 119 13 52-592 - 0-670 29-703 - 0-670 13-443 - 0-669 16-854 + 1-034 - 0-218 - 0-816 o 45 46 87 58 16 45 30-737 13-225 16038 + 0-967 + 0-957 a. = + 2-891 b t = - 2-881 c. = - 0-010 33-7 33-5 0-7190356 0-7226102 + 35 - 7 I 0-7190391 P P. 0-7226095 P P 2 0-9992321 P. P 2 139568-98 140262-01 193955-80 87 45 17-523 4 5 6 180 55 42 81 00 29 48 42 02-009 29-496 18-596 13-557 5 - 0-550 28-946 + 0-940 55 29 29-886 + 05 - 0-550 18046 - 0-211 42 48 17-835 + 1- . 81 42 13-557 -v 0-549 13-008 -0-729 81 42 12-279 81 42 13-557 00-000 j i - 0-550 28-946 - 0-550 18046 -vO-549 13-008 nft.nnn + 0-940 -0-211 - 0-729 180 55 42 81 00 29 48 42 00-000 29-886 17-835 12-279 + 0-688 + 1-080 i-688 •080 a. a 2 = + 2-456 b 2 = _ 2-848 c 2 = + 0-392 2 = 2 = : 2 = = + 2-456 27-5 0-8240409 + 26 0-8240435 = - 2-848 35-5 0-6795054 - 7 0-6795047 - + 0-392 0-9895344 27-5 35-5 0-8240409 0-6795054 + 26 - 7 194104-85 \ 0-8240435 P P 2 0-6795047 P P 3 0-9895344 P., P 3 P P 2 P P3 P. P3 1 1 140262-01 115659-79 168430-53 I ' * 2 -3 180 00 01-649 . I 00000 ! 180 00 00-000 UO-OOU -0-351 j 09-817 -0-351 11-947 -0-351 38-236 + 0-840 - 0-124 -0-716 180 00 00-000 170211-90 0-8886391 0-7191779 170211-90 7 8 9 62 45 71 42 59 18 10-168 12-298 38-587 1 ill! . - 0-351 | 09-817 ! + 0-840 62 42 10-657 + 0- . - 0-351 11-947 j - 0-124 45 59 11-823 + 0- . 71 18 38-587 - 0-351 38-236 j - 0-716 71 18 37-520 71 18 38-587 62 45 71 42 59 18 10-657 11-823 37-520 + 0-516 + 0-966 "516 '•966 a. « 3 = + 1-998 6 3 = - 2-448 c, = + 0-450 3 = 3 = 3 = __2_^r__ = + 1-998 22-3 0-8886391 + 19 0-8886410 = -2-448 33-7 0-7191779 - 4 0-7191775 = + 0-450 0-9472686 22-3 33-7 + 19 - 4 1 0-8886410 P P 3 0-7191775 P P., 0-9472686 P., P 4 130153-56 _i p p 3 p p 4 p.p. 1 115659-79 93603-51 123290-38 J a 4 180 00 01-053 5 360 00 02-259 00-000 180 00 00-000 360 00 02-259 180 00 00-000 130153-56 i e 0 = + 2-259" e 0 = + 2-259" 2 (a 2 + b 2 + c 2 )= 41-142. Sin 1 sin 4 sin 7 from column 9 = -5265317,, Sin 2 sin 5 sin 8 from column 9 = -3531290, i 139568-98 x = 93604-71 93604-71 •5265317,, 93603-51 - 1-20 = 0-10 links per mile. iin 1 sin 4 sin 7 fri in 2 sin 5 sin 8 frc h = c. + c 2 + c 3 = + 0-832 1h = J 2 0 2 + b 2 + c 2 ) = + 13-714 * = + 3 «o = + 2-259 € = _ 2-644 39568-98 x -35312!. — 1-20 ••• « = 936Q3 gl = — -00001282 radians; •832 P + 6 Q + 2-259 = 0 13-714 P + -832 Q - 2-644 = 0 .•.c=- -00001282 x 206265 = - 2-644" ••■ P = +0-217 Q = -0-407 * Corrected for J triangle errors.