MATHEMATICAL PAPERS 73 
" In the triangle ZP6; given fides PZ and Po, and the includ- 
ed angle ZPo, to find fide Zo the co-altitude or zenith dif- 
tance of the fun at the time of obfervation ? Zi is perpendicu- 
lirto Po. 
Radius, | i xy ; 
: Sine co-angle ZP@ >; go Sat oR bg 808067 g 
zVFangentPZ © €: 0 47 36 32- ^——10 «0396048 
: Tangent fegment P7 35 9 16. ^: to 795845691» 
s Po 84: 84 59 O. 
Dif. = fegment Qi 49 49 m 
Sine Cop? — —7 — "a 0 44 | “9125573 
> Sine Cees So S "as 10-6 É "8095856 
: Sine Co-PZ | 4223 28 T 8287809 i 
: Sine Co-Zo ^ © ^ 32 7 dp" ^* 9 17258072 
Zo = Z3 a Mq T $ 
— — In the. ARUM ZPS are given the three fides to. fnd: apah 
: ZPS. TERA ; & = i i esos eg T 
Pl 09 POMPE, viale odor 
PS 84 52 38 
Be SEG Um ; LA - 5 | 
Sum of fides... | obl gud ago. 21 5 ERE E Mes 
dre - (^95 10 9» jy 
"——MRRERS 
Io 17 59> 5 
K 
PZ 
