m ) o c as 
19» 
V 
Si brevitatis ergo T. — = z», erit z/ = }(ziP -f« 
2 
©■ 
3b?) = w ( i H . 
3 J 
Pro area A HP. 
( i 
i : Sin. v : : PF 
\ 
v 
Cof.- 
2 J 
Sin* v 
: PH = 
-% — 
v 
Cof — 
2 
2 Sin. . Cof. a v - 2 Sin. 4- 
V 
V 
V 
Cof.- 
2 
Cof.- 
2 
— 2 T. — = 222? ; 
D 2 
i : Cof* z> : : PF 
Cof. -v ; 
A Cof. v 
: FH = — 
2 — 
V 
Cof. — 
2 
2' Cof. 
Î? 
Cof. 
u 
V 
Cof.— 
2 
= 2 — Sec. — 2 — i 
2 
T. — = i — T.- = i — 
2 2 
Ab AF— i fubtrahendo jam inventam FZ/, ha- 
betur AH = i — (i — vi*) = w 2 . 
Ab area APF — u — \td % m 
Subtr. Tr. PHF = ±PH. i?F=— z» 5 + w 
Erit area APH = fw- 3 = fz » a x 2 zy 
= f^tfx P/F 
Haud 
