((^viri) 



l/cos"Z-t-4« (a -)-h«h{h—2)—?.&'/t'ii 



^ ^' -^ {i—2u)\p"—).p"-^-j)s\nL 



, ^, \ -^ °' ,y l//t— J \-Oih(h 2) 3«'/i' (cas<lela 



(a6) . . . I ..<,_ _£VZ_ >^ ^ . ^ l>ef.acl. 



(.7). ..tang,3'=,'}/|:^ 



(28).. . tans.S"=/'|/-^; 



(29) . . . siii5'=c.s'm3/3' ; 



(30) . . . siae"=c.sin2/3" ; 



sin-i(9' 



sm—O" 



0^) • • • -^'=,-:^' 



(33) . . . A'=y,-c'sinY; 

 (3{) . . . A"=V,_c.smY'; 



(35) . *■■'"=''' 

 (36). 



(37)- 

 (38), 



(39) 





A 



K- ' 



K"taxi'^?" , 

 A" ' 



— Z^"^' 



