baLLjugglermoka
ѷջѷȤ߹碌60+47=107
1111ڡ 0:56:38 51027

ľ˷礱ΤǤϤʤ⤷ޤ󤬸̩ʾǤ

ξ޷ưդǤ뤳Ȥ򼨤AB=1ȸꤹТABDնBCDѶꤽ줾դޤ뤳Ȥ齾

äơξ褦ʿ޷ҤȤĹФ褤ACEѷȤAC˴ؤEȿ¦AC=CDACD=86Ȥʤ褦D롣AE˴ؤCȿ¦AE=BEAEB=86Ȥʤ褦BȤ롣λͳѷABCDξ޷Ǥ뤳Ȥϳ٤׻Ф狼롣äƤΤ褦˹ͳѷABCDο޷Ǥꡢλ΢BACͤ60+(180-86)/2 =107ȵޤ롣
1111ڡ 2:09:42 51028

ľ˷礱ΤǤϤʤ⤷ޤ󤬸̩ʾǤ

ξ޷ưդǤ뤳Ȥ򼨤AB=1ȸꤹТABDնBCDѶꤽ줾դޤ뤳Ȥ齾

äơξ褦ʿ޷ҤȤĹФ褤ACEѷȤAC˴ؤEȿ¦AC=CDACD=86Ȥʤ褦D롣AE˴ؤCȿ¦AE=BEAEB=86Ȥʤ褦BȤ롣λͳѷABCDξ޷Ǥ뤳Ȥϳ٤׻Ф狼롣äƤΤ褦˹ͳѷABCDο޷Ǥꡢλ΢BACͤ60+(180-86)/2 =107ȵޤ롣
1111ڡ 2:14:34 51029
ֿء׾ι
äȤ򤦤äꤷƤޤ
1111ڡ 8:14:02 51030
Ǹμ̿
CADǺޤƵޤ
1111ڡ 10:31:07 MAIL:syokyuhsya@gmail.com 51031
ޥ
졢عǽ褦̤ξ񤷤褦ʵǤɤǤ礦ɤƤ⡢֤Τ褦ȡդοޤȰפŪʾˤʤäƤޤΤǤϡȻפäƤޤ

ʾषǤ⥢꤫ȻפäƽꤷȤ...
𡡡 1111ڡ 13:19:06 HomePage:ARENA51032
ǯ
BAC=XȤ
ACB=150-XACD=X-21
AB=AD=1AC=LȤ
ABCˤơ1/sin(150-X)L/sin30
ACDˤơ1/sin(X-21)L/sin47
sin(150-X)/ sin(X-21)sin30/sin47
򥨥XοͤѤƲ򤤤
X=107
1111ڡ 16:33:01 51033
٥륯åĥ
BDοľʬФCоΤEȤȡAE=ACBEEC=CDȤʤޤ
ǻѷAECѷǤȤȤޤƤϤޤäƳBAC107٤ȤʤΤǤ컻ǵˡ¸ߤʤ򤱤ʤΤ褦ʵޤ
ؤǤ⻰ѴؿǴؿѤƶ׻Ǥ褽107٤ȽФˡפĤޤ
򤱤ƤʤΤƤޤ
1113ڡ 3:27:19 51034
ɥȥ
פ֤˲򤭤ޤAC=CDλϰϤǤξǤޤ
ؤȤ鷺˲ˡϤʤΤǤ礦
1113ڡ 9:56:09 51035

äȥ󥭥󥰤̾ܤ³Ͽ䤨Ƥޤ⤷ʤᤷ
äϤڤȤƷǼĤ񤭹ߤޤm(_ _)m
1115ʷ 19:31:50 51036
Ȥ
ɸa=17Ȥ
13=30-a,34=17*2Ȥ
B(0,0),D(2,0),A(1,-(sqrt(3)*tan(a)-1)/(tan(a)+sqrt(3)))
ľBC:y=-tan(a)*x,CD:y=tan(2*a)*(x-2)θ
C(-4/(tan(a)^2-3),4*tan(a)/(tan(a)^2-3))
ľAC:y=-(sqrt(3)*tan(a)*x+3*x-4)/(tan(a)+sqrt(3))
y=0ȤE(4/(sqrt(3)*tan(a)+3),0)
tan(AEB)=(-(sqrt(3)*tan(a)-1)/(tan(a)+sqrt(3)))/(4/(sqrt(3)*tan(a)+3)-1)
=(sqrt(3)*tan(a)+3)/(tan(a)+sqrt(3))
ʬ,ʬҤsqrt(3)򤫤
tan(AEB)=sqrt(3)*(sqrt(3)*tan(a)+3)/(sqrt(3)*tan(a)+3)=sqrt(3)
AEB=60ꢤAEB1360λĤγѤ
BAC=A=180-13-60=107롦()
˭ԡ 1115ʷ 19:40:35 MAIL:fttnm528@ybb.ne.jp 51037
KawadaT
٥륯åĥΤ򿿻ơʬBDοľʬľФơäоΤEȤޤ

޳ѷABECDˤĤơAB=AD=a, BE=EC=CD=bǤǢAECѷˤʤ뤳ȤǤޤ

AECEC=bǤޤ⤵asin(13)+bsin(34)Ǥ(1)

BD=2acos(13)=b+2bcos(34)Ȥäơ(1)aõޤ

AECι⤵=bsin(34)+[bsin(13)(1+2cos(34)]/2cos(13)

줫ϡAECι⤵ECͤ뤿ᡢǽƤޤ

AECι⤵/bϡ[sin(34)+sin(13)(1+2cos(34)]/2cos(13)

;Ƥޤ

sin(34)+[sin(13)(1+2cos(34)]/2cos(13)
[2sin(34)cos(13)+2sin(13)cos(34)+sin(13)]/2cos(13)
[2sin(34+13)+sin(13)]/2cos(13)
[2sin(47)+sin(13)]/2cos(13)
[2sin(60-13)+sin(13)]/2cos(13)
[2[sin(60)cos(13)-cos(60)sin(13)]+sin(13)/2cos(13)
sin(60)

ϡAECѷǤ뤳Ȥ򼨤ƤޤꡢCADջѷȤʤꡢ٤107٤ˤʤޤ
1115ʷ 20:42:07 MAIL:kawada@med.gunma-u.ac.jp 51038
鯤ο
BDοľ2ʬBCθEȤޤ

BD=2ȤȡAD1/cos131/sin77

ޤ
CD:BDCE:DEʢ袤BCD梤DCE
sin17:sin129ʢ
sin17:sin51

ꡢCD2sin17/sin51

ǡCAD˲­FȤȡ

AD-2*DFAD-2CD*cos47
1/sin77-2*(2sin17/sin51)*sin43
(1/(sin77*sin51))*(sin51-4*sin17*sin77*sin43)
(1/(sin77*sin51))*sin51-4*sin17*sin(60+17)*sin(60-17)]
(1/(sin77*sin51))*[sin51-4*sin17*(sin60cos17+cos60sin17)*(sin60cos17-cos60sin17)
(1/(sin77*sin51))*[sin51-4*sin17*{(sin60cos17)^2-(cos60sin17)^2}]
(1/(sin77*sin51))*[sin51-4*sin17*{(sin60cos17)^2-(cos60sin17)^2}]
(1/(sin77*sin51))*[sin51-sin17*{3*(cos17)^2-(sin17)^2}]
(1/(sin77*sin51))*[sin51-sin17*{3-4*(sin17)^2}]
(1/(sin77*sin51))*[sin51-3*sin17-4*(sin17)^3}
0(3ܳѤθ)


AD=2*DF
AF=DM
袤ACFᢤDCF
CAFCDF47
BAC180-13*2-47107
//

1115ʷ 23:34:29 51039
٥륯åĥ
ɤزˡϤäƤ⻻ˡ¸ߤʤǤ礦
ѷˤʤ󤸤ʤʢäƤߤäƤϲˡȤϸƤ٤ޤΤǡ
ƳѤȤ郎СǽΤѤĴ٤Ƥä鸫Ĥä⤢ʤΤǤ礦
1116ʲС 0:07:42 51040
鯤ο
BDοľ2ʬBCθEȤޤ
ABC˲­FCAD˲­GȤޤ

λβ줫лŪФΤ줬Ǥʤ
GAD
CACD
ACFG
AC^2CE*CBCD^2(Ȥ¦Τ߼뤬¦ʤ)
ABEγܱߤ濴HȤȡACAH

狼äƤС嵭ΤϤ狼Τʸξ狼Ƴʤ

ŪޤϡľѻѷCDGCGޤ֤ơCGAդ­
ˡCAޤ֤ACFդ­Ǹ˻구AFBդ­йǤΤǡ
˵դ˵ŤΤǤ礦
1117ʿ 22:28:34 51041