LD

2)' + ii)= 600 26' 42».

S \o'^ sin 3 = 1.8G5.74.

I log cos tp = 1.831.91.

1° Calcul de m; cos m. 2° Calcul de cos s; cos m — cos s.

l log sin 2) =1.72591

I log sin S' = T.67592

Ilog cos ® = i. 92775 log cos ®' = T.94471 log cos 2 a =1.99950

s observé = 89» 20 '40" point de pli. = — 2 45 15

Reste = 0.47013

logd'add. =0.12669

log cos m =: 1 .99!-'65

cos m = 0.99o9

Reste =

1 reste =

Réfraction =

log cos s =

cos s =

cos )n— cos s =

3° Calcul des coefficients A, B, C, D.

Calcul de A.

log cos' -j = T. 66382 logcosib =1.92775 lotccoslï)'= 1.9i471

log A = 1 .53628 A =- 0,34378

Calcul de C.

log 2= 0.30103

log sin 3 cos 9 = i 69765

logsin(LD' -1D)=(») 2.82550

logsiaa= 2.38075

logC= 3. 20193

Calcul de B.

log 2 =0.30103

log sin 9 cos ç = T. 69765

log sin (iD + 2)') =1.93946

log cos a = T. 99987

logB =1.93801