ff^- %ov^eQ til ^iuctionmå 
-{in.^[(n + iv) + Cn + Vi)l l . r> / c 
m ^tang,x[(n+0 + (n+"0] - tang.i(o+v) . 
|i)i(fcn man ml af ^igentc gonulcr, uaav n atuni^eg = o, n, eder iv* 
/.) cof.(n+n)= X___^_^^^^^^^ §. 39. gS^«. ///. 
ffior.(n + n) = - ,, f-^/'j-y^rt^ ^> Cfll 
V -1 ; col.^.fi„.(„ + ,).fin.(n4-m)\» 
^^•j i , cor.(n + i).cof,(n + ni) | §• 40« 
[tang.;{/ = tiJToH^^) • J 
nn fin^ ifn+lA = ""iK"-h")4-("+v)+C"+0] ■ fin§[(n4.„04.(n+,)-(n4-v)] 
V 2\ i" ) iin. (n-j-iii) . lin. (n4-0 ^ 
@ce(e?$ i bat førfle af Mjfe tu gormler 
n -f-i = 90° f tn^et: cor.(n+ii) == — cof. (n+v) : fin. (n-j-ni), 
b) n-^m = 90^, - - cor.(n-|-ii) = — cof. (n^-v) : fin. (n-}-i), 
$) n-f-v = 90^, - - cof. (n-fii) cor. (n-|'i)^cor,(n+in)* 
§^ 49* 
3Cf fo SStrifl^r 03 tern fatU^ ©ibe (]itøne 6efldiim?g 
J.) !S)en gi^ne Sibes mob(!aAenbe ^Qinfd ^eb gormkn /i^, gffet F, Mm 
fottW n = o, eder 11 ^ cHer iv, 
/F.) cof(n-f i) = cof(n-|-ni) ♦ cof(n4-v) — fin{n-\-ni) ♦ cof(n4-iv) , fin^n+v)^ 
[cot.[^J cof (n+iv). tang. j 
