ߤɤ
http://www.sansu.org/used-html/index608.html
͡ 38ڡ 0:05:40 47040
٥륯åĥ
ģþˣááǤȤʤ褦áǤȤȻѷ£áǤϣ¤ΤȤγѤջѷˤʤΤǣ£áǡáǡ5ѣ£ġѣģáǤʤΤѤѤƣ£ġģáǡ755ߡ7/12ˡ35/12Ȥʤޤ

Ѥ椸ʤǤĤĹƣ¤ȣáǤľѻѷȤĤǤդΰ̣򤢤ޤͤ˽񤤤ƤΤХƤޤ
38ڡ 13:14:46 47041
鯤ο
CDˢAEC᭤ȤʤEȤ롣

AECջѷǡAEACᣵ

BADADC-ABD᭡
DAEAECݢADC᭡
äơBAEBAD+DAE᭢

BAEABEꡢEABջѷǡBEAE5

ADϡBAEʬ顢
BD:DEAB:AE75
äơBD5*7/(5+7)35/12
38ڡ 0:11:55 47042
٥륯åĥ
ʤߤ˳٤ˤĤƤϳѤ2Ѥޤ
ѣ£ġ3-21
ѣģáǡ4-31
38ڡ 0:13:22 47043
baLLjugglermoka
ϻˤƤϰפäǤ򤭤ˤϺŬǤ
38ڡ 0:13:36 47044
ǯ
#47041٥륯åĥ#47042鯤οͤƱǤ
ᤤ줾γ٤ޤǤϽФƤΤˢAECջѷ˵դΤ˻֤ä
38ڡ 0:48:29 47045
ˤ
ФǤ(*_*)
CʬABȤθEȤƢECBʬ
ABȤθFȤȭABCACEEC=EBBC=24/5
ABDCBFAF=AC,BF=2,2:BD=24/5:7,BD=35/12
Ķļˡ 38ڡ 1:26:14 47047
Ȥ
ɸA(0,0),B(7,0)Ȥ
ABC=aȤ,BAC=180-3*a
ľAC:y=-tan(3*a)*x,ľBC:y=-tan(a)*(x-7)
ȤθCAC=5tan(ABC)=tan(a)ޤ
2ܳѤθεդtan(DAB)=tan(a/2)ޤ
ľADľBCȤθDޤ
B(7,0)ȤεΥʿǤ롡XMaxima Ǥ

trigexpand(tan(3*a))$part(solve([y=-%o1*x,y=-tan(a)*(x-7)],[x,y]),1)$
rhs(part(solve(rhs(part(%o2,1))^2+rhs(part(%o2,2))^2-5^2,tan(a)),2))$
trigexpand(tan(2*a))$part(solve([y=rhs(part(solve(%=%o3,tan(a)),2))*x,y=-%o3*(x-7)],[x,y]),1)$
sqrt((rhs(part(%o5,1))-7)^2+rhs(part(%o5,2))^2);35/12()
˭ԡ 38ڡ 1:26:45 MAIL:fttnm528@ybb.ne.jp 47048
Ȥ
#32619
>72424/7
>2ǤǤͽǤ̲ơ

꤬608ȿͤ㤦Ʊä餷
Τ褦̲ƽ񤤤Ƥʤ¾οͤ2βˡ񤤤ƤʤΤ
ǤˡäƤߤޤ

5/sin(ABC)=5/sin(2*a)=7/sin(4*a)=7/sin(ACB)
7/sin(ADB)=7/sin(%pi-3*a)=BD/sin(a)=BD/sin(DAB)2
ǽμsin(a)ޤԤμơXMaxima Ǥ

trigexpand(sin(2*a))$trigexpand(sin(4*a))$
part(solve(num(factor(ev(5/%o1-7/%o2,cos(a)=sqrt(1-sin(a)^2)))),sin(a)),2)$
trigexpand(sin(3*a))$ev(%,cos(a)=sqrt(1-sin(a)^2))$
part(solve(ev(7/%=BD/sin(a),%o3),BD),1);BD=35/12()

βˡ׻ȤñˤǤޤ͡
˭ԡ 38ڡ 2:22:22 MAIL:fttnm528@ybb.ne.jp 47049
ֿء׾ι
ȤޤŻޤ
ǤϤɤΤʡ
38ڡ 3:19:41 47050
ֿء׾ι
ѤΥʬϻפǤǤ͡ʡ
38ڡ 3:28:30 47051
Ф
ŻǤѤ2ʬȻʿ̵äƤΤϤμϹ⹻Ǥ
38ڡ 4:33:29 MAIL:hbmath1965@yahoo.co.jp 47052
̴
#47041٥륯åĥͤβ餷ΰǤ͡
ˡ쥬Ȥʲˡ󡼡ߺͤξˤϤͤ
ϽФƻޤ
ѣγѤʬ£äαĹȤθŤȤ
ͥ饦ţá12Фʻѷ򸫤Ĥ
ä35/12é夭ޤ
ٻΤ桡 38ڡ 9:36:34 47053
⡼ޥ
֤äƤΤǤ礦͡Orz
ä㤦ץǡ
£äؤοޤ֤áǤȤȡ
ѣ£áǡѣ¤ǡ£áǡáǡáᣵ
ĤϳѤʬ£ġᣵ*(/ˡᣳ/
ޤ

ϡѣäʬǤǤʢACB'ǹͤ顢AB'=5*(5/7)=25/7, BB'=7-25/7=24/7=CB', BC=(24/7)(7/5)=24/5=48/10
ˡ£äؤο­ȤޤǤΣ£ȡ(12/5)(49/24)=49/10
so...ѣ¤߳ѤˤʤäƤޤΤǡɤäƻפäƤޤɡְäƤޤͤ...^^;
38ڡ 10:30:26 47054

ɤ⡢οޤλѷ¸ߤʤΤʤȻפΤǡ֤ޤ
ѣä߳Ѥˤʤ餶򤨤ʤΤǤϡ
38ڡ 18:02:21 MAIL:eeke-eeke-eeke@k-ft.net 47055
٥륯åĥ
ؤǸڤȳѣä߳ѤˤʤäƤޤȤȤǤְ1ѷι⤵0.87ȤפߤʤΤȻפФΤǤϤȸĿŪˤϻפޤξ硢֣¡7á5ȤƷ׻ʤפȤΤۤǤ礦
ʤߤˣä߳ѤˤƤ⡢áǤ£äαĹ塢˻äƹԤСƱˡDz򤱤ޤ͡

0.7Ȣ2/2äͤùߤ0.87
39ʶ 9:35:13 47056
⡼ޥ
#47056
٥륯å
ä!!
BC'=5
BD=5*(7/12)=35/12 ȤǤΤǤ...^^;
ޤǤ蘆ƤޤäƤޤ...^^;; Orz
AB=7, BC'=AC'=5 Ȥջѷˤʤ褦Ǥ...
38ڡ 23:02:13 47057
⡼ޥ
Ǥʤ...^^;

٥륯åĥְͤ̾㤨ޤm(_ _)m
38ڡ 23:05:03 47058
ǯ
#47064#47065
ΤˡC߳ѤˤʤꤽǤ͡
Ǥ⡢ջѷACEECB¦ˤʤ뤫¦ˤʤ뤫ΰ㤤ǡƱ褦˲򤱤ΤǤϡ
BAD=ɬˡ
DAE=Ȥʤ褦EBCαĹˤȤȢEγѤϭ
ΤˡACE⢤EABջѷʤΤǡAE=BE=5Ʊ̤ˤʤ롣
ȤϻѷγѤʬƱ褦˵롣
ʤߤޤ#47066ˤƱƤޤ

39ʶ 16:54:41 47059
kyorofumi
޷꤬³¤̤³ޤ:D

¤ϰ̤ȤäȤʬΤ˰󤢤ʤΤǡϢ³̤Ϥ줷פäƤޤ
39ʶ 22:04:38 47060
ޥ
ߤޤ󡢢C߳Ѥˤʤ뤳ȡ˵ŤƤޤǤm(_ _)m
iMac 310ڡ 1:48:24 HomePage:47061
ˤ⡼
Ф
Ф⤷ޤ󤷡äȹ̯ʲƤȻפޤ
ȤβͤḤ̂ǡ񤫤Ƥޤ

ABˢACE=ECB=Ȥʤ褦EȤ롣
ACE梤ABCդ5:7AE=25/7BE=24/7
BECBE=ECջѷʤΤEC=24/7
٢ACE梤ABC顢BC=24/5

ABˢBCF=Ȥʤ褦FȤȡ
AFCѤջѷʤΤBF=2
CBF梤ABD

BC:BF=AB:BD24/5:2=7:BDBD=35/12

ڥȡ
٤礭椬ФƤΤ
Ҥջѷ޷
ˤϤʬäΤǤ
ʤ֢ACDѷ褦פȸäƤޤ
ϢȯƤޤޤ
ɽľǤβǰơƥȥ饤Ȥ
ǼŪΰפĤȤǤ
޷ϥԥȤ餹򤱤ΤǤ
㤨ʤȤϥȥȥܤǤ
310ڡ 2:21:32 47062
ޤ
򤱤ʬ˫Ƥ
ǡʬDz򤱤ƤޤϢƬ򸫤Ƥߤ(^^;
somewhere in the world 314ʿ 0:15:47 47064
DSK24
ջѷ롣
ʿȤäѵ롣
Ѥ⿴ߤȾ¤롣
٥ڤȤäĹ롣

ɤͤƤ⻻Τʤ
¾Τä긫ƤȻפޤ
314ʿ 12:09:15 47065
baLLjugglermoka
캣ϵ٤(^^;
315ڡ 0:03:13 47066
ޤ
Τ褦Ǥ͡
somewhere in the world 315ڡ 0:08:19 47067
baLLjugglermoka
ޥ뤵˻ΤǤ̵ä٤Dz(^-^)
315ڡ 0:09:31 47068
baLLjugglermoka
ƤȤͤīᤤǤ⤦ޤ
ǹƤ򤤤ե饤󥰤ǽ̤ϥΡȤǤ(ȯ)
315ڡ 0:11:51 47069