m, ) ° ( © 
216 
erit Sin. v = 0, & Cof. v = g = 1, ergo Jdv Sin. u 
= 1 — Cof. u = Sin. ver. v. 
Cor. I. Differ. Cof. v = Sin v. 
Cor. 2. Jdv. Sin. m -\- n . v = 
m -+- n 
Cof. m n.v 
m •+• n 
Variæ etjam aliæ propofitiones modo confimili 
eruuntur; fcilicet 
1:0 Ducatur CR tangens arcus CH , & per G 
re&a AGO occurrens tangenti in 0 , nec non cen- 
tro A & radio AR defcribatur arcus, NR. Ob fi- 
milia triangula ADG & ONR, erit OR: NR:: AG: 
NR 
AD, ergo differ. Tang, v ~ — . Eft vero 
Cof. v 
I : dv : : Sec. v : dv. Sec. v = NR, ergo differ. 
dv. Sec. v I 
Tang, v = — . - feu ponendo — — pro 
Cot. v Col. v 
dv * dv 
Sec. v, erit differ. Tang, v = ~: z r r a & / : l," 
Cof. vl J CoLv\ 
=5 Tang. v. 
2 :o ON : NR : : GD : AD, hoc eft, differ. 
du.Tang. v 
■‘“cocT"^ 
Sec. v = 
feu f 
NR. Sin. v dv - Sin - v 
Cof v 
-/■ 
dv. Sin, v ^ Tang, v 
Cof v\ 
[ang 
Cof V 
= See. v 
3:0 Du* 
