503 
a) n-^m = 90°: cof.(n-|-i) = — coC(n-^iv] ♦ fin.(n~j-v)* 
c) n-fiv = 90°: cor(n-l-i) = cor.(n--j-in) ♦ cof. (n-[- v)* 
JB.) $^)e (O anbre ©iberftubcø yeb (^t)i{fcn fem ^d\l af felgenbe gormfer, ^yeri 
J 7.) ™ cot. (n+ii) = 
r I % r rn+liil 
cot. fn4- v) ♦ iin. I ^ r 1 i r i 
_l2L^-_i:!±U 4. cot. "+'^ . cof. "t" 
fin 
— cot. (n-|-ii) = 
L" + v.J 
(n4-ni)-pepj fn+vil 
L"-i-v'J in + .J' 
1 
ung. [^j = «ng,(n+vo. cof. [;;+;;]. 
^ §. 42. 
f 
FJII.) 
^»tangi[(n+i:)+(n+.xv)] = tangx(„+v0.:^|^^ 
@r i ten F/tc g^^vmfl 
^) n-f-"! = 90^/ blimt ~ cot. (n+ii) = cot, (n-fv) : iin. (n-fiv) 
^) n-f-iv = 90*^, - - — cot. (n-f 11) 
/) n-|-v = 90°, - - — -cot. (n-f-n) 
g) n-}-r=90°, - - — cot. (n-f-n) 
h) n-j-vi = 90^, - - — cot. (n-f u) 
cot. (n-fvj ♦ fin. (n-j-iii)» 
cot ^"+'''l.co£ + 
[n-j-ivj * [n-j-uij^ 
cot. (n -f- v) : fin. (n-[-vi)» 
cot.(n-Lv) , fia + 
2ff m SJinft'f 03 (O ©iber, ^voeaf t>en c«e (laaer (ige ot)er for ben ^ivne 
