Taro
APCȹƱʻѷμդAB˽Ťͤ345ľѻѷǤޤ
ä3324.5Ȥޤ
ľ塡 414ڡ 0:06:56 24883
Taro
졩4.5ǤϷǼĤʤ褦Ǥ
9/2ߤǤ
ľ塡 414ڡ 0:12:48 24884
ʸ
ĤäȤޤ
3:4:5ȥԥȤƥäȽ񤤤äƥ˥ޥꤷƤΤˡ
0:31äơġ
ޤäȥǥȤäɡ
414ڡ 0:12:54 MAIL:kyorofumi@msn.com HomePage:ʸ24885
schrodin
4.5äƤܤä9/2ʤʤǤä
414ڡ 0:23:10 24886

ݤPHSˤǤ

4.5Ȥʤݤdzǧޤ˽ޤm(_ _)m
414ڡ 0:27:18 24887
Ȥ
ͤ˺ɸˤޤ
褺դοޤA(0,0),C(3,0)Ȥޤ
ľBC:y=tan(90-a)*x=x/tan(a)
ľAB:y=tan(2*a)*(x-3)=2*tan(a)*(x-3)/(1-(tan(a))^2)
2ľθ
x/tan(a)=2*tan(a)*(x-3)/(1-(tan(a))^2)
x*(1-(tan(a))^2)=2*(tan(a))^2*(x-3)=2*(tan(a))^2*x-6*(tan(a))^2
x*(1-3*(tan(a))^2)=-6*(tan(a))^2
x=-6*(tan(a))^2/(1-3*(tan(a))^2)
ȭȤ
y=-6*tan(a)/(1-3*(tan(a))^2)
ȭȤ
B(-6*(tan(a))^2/(1-3*(tan(a))^2),
-6*tan(a)/(1-3*(tan(a))^2))
C(3,0)ȤεΥ5ʤΤ
(-6*(tan(a))^2/(1-3*(tan(a))^2)-3)^2
+(-6*tan(a)/(1-3*(tan(a))^2))^2=25
򤤤Ƽ¿Ǥդοޤˤ
tan(a)=-1/3
ȭȤ
B(-1,3)
դοޤAC=3ȤꢤABC=AC*3/2=9/2()
4.5줺Ȥ⤹9/2ޤ򤤤ƳڤäǤ
Ǥϡ
˭ԡ 414ڡ 0:46:10 MAIL:fttnm528@ybb.ne.jp 24888
оϩ
http://anenokouzi.hp.infoseek.co.jp/sansu-zu.gif

ˡ3:4:5λѷˤϤǹͤޤ
γ 414ڡ 0:51:07 MAIL:pctakada@mail.goo.ne.jp HomePage:Ĥ줭24889
оϩ
ޤϾʤĺޤ
ޥ<()>
γ 414ڡ 0:52:36 MAIL:pctakada@mail.goo.ne.jp HomePage:Ĥ줭24890
ޥ
𤷤ޤ4.5ǼĤʤäޤñʥݤǤ(^^;;
PowerBook G4 414ڡ 0:52:41 MAIL:masaru-y@sansu.org HomePage:24891
ޥ
Υڡhttp://kurihara.sansu.org/ˤ˥֥ƥԥåθξ...
PowerBook G4 414ڡ 1:01:51 MAIL:masaru-y@sansu.org HomePage:24892
tomh
#24892
ΤȤˤ2ܤ֥ޤ (^^;

ȤǶᡢηͥåȤǤʤΤǤ
ιڤäƤ褦Ǥ

˻ʤɤΤǤ
ԡ 414ڡ 1:12:59 MAIL:tomh@yahoo.co.jp HomePage:H to M24893
ϫ
ʤȤʤޤν񤭹ߤ򸫤ơ
֣פʤΩĤΤʬΤǤ
դλˤʤ뤳Ȥ狼ޤ
ɤʤƤ
414ڡ 3:30:44 24894
taku
áģäȤʤĤ£þˤȤȡ£Ģ梤£ãȤʤꡢ
Ģܣ£СܣģФ£СУġᣵ
£ġᣲУġᣲߣᣳ
줫Уáᣳܣᣱ
äƣУáãᣱᣵ
ꢤУäϣλѷʬ롣
ޡǵŤȤǤ
414ڡ 3:48:28 24895

ˤäѣãСᣲȤȤꡡӣɣΡʣܦȡˡᣵӣɣΡʣݣȡ
椨ˣãϣӡʦȡˡ᣹ӣɣΡʦȡˡᣱ
£áʣˡӣɣΡʣȡˡʣˡʣˡ᣹
414ڡ 5:36:47 24896
ϥ饮㡼ƥ
Ϥ褦ޤ

MathematicaDz򤱤ޤǤ
̶彣 414ڡ 10:02:27 HomePage:ĩ24897
kasama
Ϥ褦ޤѴؿȤޤǤ(^_^;)
B=Pi/2-3ȡC=2ȤȤơ
AB*cos(B)+3*cos(C)=5
AB*sin(B)=3*sin(C)
򤤤
sin()=1/10
äơS
S=3*5*sin(2)/2=15*cos()*sin()=9/2 ()
414ڡ 10:06:24 24898
ޥ
äȼǤʤäƤ̤μδꤲǤ

>桼åɡظ٤ҥ٥Ȥľž夲ܤäƤʤƤ
>Ǥ?

ȤΤȤʤǤʬˤʤä㤤ޤǤ礦m(__)m
PowerBook G4 414ڡ 11:24:25 MAIL:masaru-y@sansu.org HomePage:24899
taku
#24899
ҥ٥ȤδشΤȤǤ礦
̼ҤΥ֥롼ХåΡְ֤ؤƻܴζͺ
ˤξϤˤ˴ؤ뤳Ȥ񤤤Ƥޤ
ְäƤ餴ʤ
414ڡ 13:13:52 MAIL:takuo@kcv.ne.jp 24900
uchinyan
ϤˤϡīȤϡ֤ñפȻפäΤǤϤޤäƤޤޤ (^^;
ͤΤǤ礦
B AP ʿԤAC C ؤαĹȤθ D Ȥޤ
ȡABD = BAPBDA = 90٤Ǥ
ˡABD BD ФоΤޤ֤A б E Ȥޤ
ȡA, D, E ϰľˤꡢBAE ջѷǡBAE = BEAABD = EBDAD = ED Ǥ
CEB ˤơ
CBE = CBA + ABE = (180 - BAC - BCA) + (ABD + EBD) = (90 - 3 * BAP) + 2 * BAP = 90 - BAP
CEB = AEB = BAE = 180 - BAC = 90 - BAP
äơCBE = CEB ǡCE = CB = 5 cm Ȥʤޤ
줫顢AD = 1/2 * AE = 1/2 * (CE - AC) = 1/2 * (5 - 3) = 1 cmCD = AC + AD = 3 + 1 = 4 cm Ǥ
ȤBCD ϡBDC = BDA = 90٤äΤǡCD = 4 cmBC = 5 cm ꡢ3 : 4 : 5 ľѻѷǤ
äơBD = 3 cm ˤʤޤ
äơABC = BCD - BAD = 1/2 * 4 * 3 - 1/2 * 1 * 3 = 9/2 cm^2 ˤʤޤ
פĤ̲ȤơǽˡAC C ؤαĹˡCB = CE Ȥʤ E ȤΤޤ͡
βˡϡ2 * BAP90 - 2 * BAP90 λĤγѤľѻѷ
3 : 4 : 5 ľѻѷˤʤ뤳ȤݥȤʤΤǡ
¾ˤ⡢Τ褦ʻѷСƳФʵޤ
ʤѴؿǤǧޤʥ֤Ȥ3ܳѤθɬפˤʤޤ
Ǥ⡢ꤴʸ٥Ǥ
ͥνȡ 414ڡ 14:26:58 MAIL:uchi@sco.bekkoame.ne.jp 24901
uchinyan
#24899ڤ#24900
ҥ٥ȤδشΤȤǤ礦
ˮȤʤäƤΤΤˤʬޤ󤬡ִؤδáסȤΤäȻפޤ
ʿξҡִؤͶסǡΤҲ𤷤Ƥ褦˻פޤ
긵ˤʤΤdzǧǤޤ󤬡ʤפȻפäޤ
(ɲ)
ǧޤ
ʿܡִؤͶסǤϡִؤδáסȤʤäƤޤ
ϡ"Grundlagen der Geometrie", 1899 Ǥ
־ʿפȤϡ¸ΤȤϻפޤե륺ޤޤʤ줿ؼԡʿˮɧΤȤǤ
ɰդɽơפȸƤФĺޤ󡢻̼Ϥޤ (^^; ǰΤᡣ
(äơ)
ͥνȡ 414ڡ 17:10:51 MAIL:uchi@sco.bekkoame.ne.jp 24902
uchinyan
#24893
ΤˡΤ̾ǶͥåȾǸʤؤξιߤޤäƤޤ͡
˻ʤФΤǤۤǤ
ͥνȡ 414ڡ 14:12:27 MAIL:uchi@sco.bekkoame.ne.jp 24903
uchinyan
̲ǤȻפä顢#24895takuβˡƱ褦Ǥ (^^;
޳ѤʤΤǡ񤤤Ƥޤ
ξϡǽˡBAP = PAD Ȥʤ D BC ˼ޤ
ȡBAD = BCA = 2 * BAP ʤΤǡBAD BCA Ȥˤʤޤ
ޤ
CDA = CBA + BAD = (180 - BAC - BCA) + 2 * BAP = (90 - 3 * BAP) + 2 * BAP = 90 - BAP
CAD = CAP - PAD = 90 - BAP
顢CDA = CAD ǡCD = CA = 3 cm ǤޤBD = BC - CD = 5 - 3 = 2 cm Ǥ
ˡBAP = PAD ꡢBP : PD = AB : AP = CB : CA = 5 : 3 ʤΤǡ
PD = 3/8 * BD = 3/8 * 2 = 3/4 cmCP = CD + DP = 3 + 3/4 = 15/4 cm Ȥʤꡢ
CA : CP = 3 : 15/4 = 4 : 5 ǡCAP = 90٤ʤΤǡCAP ϡ3 : 4 : 5 ľѻѷˤʤޤ
ϡA BC ˿򲼤­ H ȤȡCAH CAP ʤΤǡ
AH = 3/5 * AC = 9/5 cm ȤʤꡢABC = 1/2 * BC * AH = 1/2 * 5 * 9/5 = 9/2 cm^2 Ȥʤޤ
ͥνȡ 414ڡ 15:38:31 MAIL:uchi@sco.bekkoame.ne.jp 24904
kata
ϫƱޤtakuǼޤ
414ڡ 20:31:36 24905
ޥ
takuuchiyan󡢤꤬Ȥޤ

Ȥꤢ̤ˤϡִؤδääܤ餷פȤƤޤäƼȤɤ褦äƴǤ(^^;;
PowerBook G4 414ڡ 22:25:20 MAIL:masaru-y@sansu.org HomePage:24906
M.Hossie
פ֤Ǥ֤Ǥ礦Ƕ̤ۤ˻Ʊ󤶤äƤޤäȻ֤褿ΤDz򤤤ƤߤޤȡѤǤ
414ڡ 22:38:55 24907
n
­
415ʶ 20:08:42 24908
Ƹ
ޥ뤵Ȥ̤ơäѥ٥⤤Ǥ͡ҥ٥ȤǤǤ͡ǤޤɤζʤˤƤŪ񿴥٥ι⤤äƤޤ͡ܤΤޤˤ⡡ٹﵭαʸˡ򳫤Ƥۤޤ
εβή 416ڡ 0:27:36 24909
⡼ޥ
դľѻѷͤȡѤɤȤʤƤ򤱤褦˻פΤǤ
ȤѤطˤʤΤ褯ʬʤ
417 1:34:35 24910
⡼ޥ
Ǥ͡
գΤϤǤ⤢ޤͤ
3^2+1^2=3^2+(3x3/4x4/9)^2 顢ѤΣʬʬ뻰ѷϹƱˤʤäơΤˤξ郎Ф櫓
Ǽޤ
417 2:01:52 24911
ޥ
#24909
٥뤬⤤äƤإʤĤ¿Ǥʤߤ˥ҥ٥ȤϿ棱ʤΤǤޤϡ֥桼åɸפɤǤޤ(^^;;
PowerBook G4 418ʷ 12:38:52 MAIL:masaru-y@sansu.org HomePage:24912