On Practical Geodesy. 53 



log e" = 3-8315591974: log e' = 3-8315591974 



5-4636720182 5-4636720182 



sin r = 1-9023486165 cos I" = 1-7794630249 



3-1975798321 30746942397 



antilog = 1187-6658 



= 20952108-2495 



value of denominator = 20953295 9153 



7-3212523464 

 3-1975798321 



its log = 7-3212523464 



.-. log tan 8,, = 5 8763274857 



.-. S, = 0°,, 00',, 15''-51503 



To find the arcs L' and L", we have 



L' = I' + 8, L" = I" — 8, 



r = 52'^ I" = 53° 



S, = 0, 00^, 15^^-30950 8,, = 0, 00', 15^- -51503 



•. L' = 52°, 00',, 15"-30950 .-. L" = 52°,, 59',, 44" 48497 

 These values are correct to the last or fifth decimals. 

 To find L' we have also the formula 79 or — 



cot L' = (1 — e^) cot I' -\- e^ • ^ ^^ ^, 



log (1 _ e") = r-9970432059 log e" = 3-8315591974 

 cot I' = 1-8928098346 log R„ =. 7-3212277292 



1-8898530405 cos I" = 1-7794630249 

 antilog = 0-7759844892 4 9322499515 



logR, = 7.3212526296 

 sm V = 1-8965321441 



7-2177847737 

 4-9322499515 



3-7144651778 



antilog = 0-0051816154 



0-7759844892 



.-. cot L' = 0-7811661046 

 .-. log cot L' = 1-8927433907 

 .-. L' = 52°. 00'. 15''-3095 



