mpancijeHdeHmHhixt, zuce^z noMou^i/o Anaxuaa BmpoAmHocjneû ^65 



j; l. arc Cas ''-.dx-z=.l{l— VF^^ ~\- r.arc Cos ]). 

 ^Afl onpefltAeHÎH nocAt^Haro nnmerpaAa Bxo^flinaro m> Bejinumy 1^, 



lIMeHHO 



saM'ÈmuM'b, ^mo cyMMa arc Cos"^- -\- arc Cos'^'^. ±2(f "zz^. O^ent AcrKO 

 ^OKaaamB amo paBencmBO nocpe^cniBOMi» aHa;iii3a; ho eit^e Aerie npo- 

 cmHMi» reoMempHHecKHM'b nocmpoeHieM'b. ^tScmBiimejiBHO, mh BD^tAH 

 Bume qmo BooSii^e 



jc "^z l Cos (p f yzzlCoS(p; 

 cAt^OBameABHo n ^jlh Kpyra 6y^ein'B maKHie 



x'zzlCos(p , y'zzilCostp, 



ornsy^a 



arc Cos jz:zq)\ arc Cos j-::z(p; 

 n maKi. ^ 



arc Cos j -4- arc Cos j znz tp (p^. 



Ho flCHO, qmo Kor^a neHnipt iifnAHH^pa ôy^emi. Haxo^nmBCfl bi» Ka- 

 KOH Hn ecniB mo^Kt M KpyroBoii ^yrn dcè (qepm. 5), mo no npïiqiiHt 

 MA paBHaro r, yr^ti (p n cp' Sy^ymi» CMe;KHHe, mo ecniB, [hMyi)'zz(p, 

 (^AMj)zzL(f ' , no^ewy {hMj) — (p -\- (f ho, ci> flpyroii cmopoHH, ogesH^HO 

 mao jvoxh (hMj)—±20^\ cAt^oBameAbHO 



arcCos ^ -j- arc Cos 7 = 120" = — . 



H maKi 



(8) JJy (arcCos'j + arc Cos ^) = '^/ydx = ^^ ^ = 



