[ 479 j 
O J 
Cof. P E = 74 03 00 — 9. 7^86966 
Cof. DC = 23 29 00 9.9624727 
J 9.73 1 1493 
Cof. DE = 7 00 00 99983442 
■ 1 1 — — ■ ■ - 
Cof DP = 57 16 57 9.7328071 
the complement of which, = 32° 43' 07", = the de- 
clination of Ardturus. 
° / // 
Then, in 3d fig. Tan. MO = 32 43 07 9 8078283 
— Rad. -f- cot. M K O = 7 1 77 00 9.8941 1 14 
Sin. KO = 30 13 37 — 9-70*9397 
= the afcenfional difference. 
Sin. PC =79 03 00 — 9.9332931 
Sin. DCP = 78 23 02 9.9910119 
19.9243070 
Sin. DP = 57 16 75 9.9249738 
Sin. PDC = 86 49 20 — 9.9993312 
the complement of which =93° 10' 40". The 
right afcenfion, therefore, of Ar&urus then, was 183° 
10' 40" j from which fubtradting the afcenfional dif- 
ference found above, gives the oblique afcenfion of 
Ardturus = 1 72 0 57' 07". 
O ' 
Then the femid. arc in a right fphere = 90 00 00 
Sun’s afcenfional difference 9 13 47 
Semidiurnal arc 80 46 j 7 
which. 
