50% 
P. A. Hansen, THEORIE DES AEQUATORFALS. 
5ss,=90°’— 5 
SssP=180°'+v 
058, = y— 9° 
EOS, = 90° — d' 
0S8='—[—k 
OPS,=90'—o 
0S=90'’—K 
5s.08S=D—-d—i(f+-k—K) 
SsPS=o—.2 


