ʿ̿޷äƤʡ
ɶʾС
413ڡ 0:10:17 46205

ϢꤷƤޤޤĿޤ
413ڡ 0:16:02 46206
ޥĥ
ꤪǤ͡
413ڡ 0:17:20 46207
ޥĥ
ꤪǤ͡
413ڡ 0:20:32 46208
kyorofumi
AQ = 10sin2x = 7/tanx,
and we get (sinx)^2 = 7/20.
Thus, BR = 7 - 10cos2x = 4.
413ڡ 0:25:38 46209
K
ABQ AQ ޤ֤B ΰư D Ȥȡ RAD
A D ջѷȤʤ RA RD Ω롣ä
BR BQ 2 RD Ϳοͤ顢BR 4 cm Ȥޤ
413ڡ 0:34:21 46210
å
BAC˴ؤоΰưSȤȡ
ABSȢRSAջѷˤʤΤǡRS=RA=10
BR=72-10=4
413ڡ 0:35:19 46211
baLLjugglermoka
2֤֤Ǥ͡
413ڡ 0:39:14 46212
Ȥ
CQ=a,CB=sqrt(a^2+49)ȤȢCBQ梤RAQ
sqrt(a^2+49):10=7:QA ꡡQA=70/sqrt(a^2+49)
tan2ܳѤθtan(2*BAC)=a/7,tan(BAC)=sqrt(a^2+49)/10Ȥ
򤭤ͤǢARQǻʿQRBQ(=7)Ǥ롡XMaxima

trigexpand(tan(2*a))$num(ev(factor(%-7/a),tan(a)=sqrt(a^2+49)/10))$
ev(7-sqrt(100-70^2/(a^2+49)),part(solve(part(%,1)^2-(%-part(%,1))^2,a),4));4()
˭ԡ 413ڡ 1:00:00 MAIL:fttnm528@ybb.ne.jp 46213
鯤ο
BRxBACȤȤ

ARQ梤ACPꡢAR*APAQ*AC
ǡAR10AQABcosȡAPACsin2Ȥ
10ACsin2ȡABcos*AC
äơAB20sinȡ
ABsinȡBQ7

AB140sinȡ(7/20)
äơcos2ȡ3/10

BRPBCQ2Ȥ顢
APAR+RPxcos2+10
BPxsin2
ABP˻ʿŬѤȡ

(xcos2+10)^2+(xsin2)^2140
x^2+20x*cos2+100140

x^2+6x-400
x-104
x>0ꡢ4
//
413ڡ 1:49:47 46214
baLLjugglermoka
#46192
Ǥޥ뤵νΤǤؼλֻդϤä㤤ޤ
413ڡ 2:20:58 46216
ϥ饮㡼ƥ
Ȥʤ̵ˤʤä褦ʵޤ
(75Сˤˤʤޤ
413ڡ 3:29:16 HomePage:˥46217
ֿء׾ι
BACsinsinܳѸᡢAQĹФʿȤޤŻǤ
413ڡ 3:20:03 46218
ˤ
ȻʿǤʴ
ʿ̿޷Ǥ
Ķļˡ 413ڡ 7:47:44 46219
ȤޤԤ
ѷ£äĺѣ򦨤Ȥơʬ򻰳ɽ
ơѷ£äФѤ뤳ȤǦ
ܳѡܳѤʤɤθơǽŪˤ
cos2ˤĤƤƳФơcos2=3/10
Фޤ줫BR=7-10*3/10=4 Ȥޤ

ϤηǼĤǡ

413ڡ 8:35:54 46220
!!!
http://www.sansu.org/used-html/index583.html
͡ 413ڡ 10:07:51 46221
ǯ
ABCAB򼴤ȿžꡢAC򼴤ȿžꡢABCʬޤޤ򤱤
ɡ񤷤ä˹碌ƺޤƤߤ顢ˡǭRBAջѷ餷Ƥޤ
RAB=RBA=90-BACǧơ2*7-104
ˤå㤵ƱǤ

413ڡ 10:35:30 46222
̴
#46221!!!
ϤƤʡɤǸޤʤȤΤäȤǤ
ۡ10ǯȤϡ󡼡õͭ񤦤ޤ
ٻΤ桡 413ڡ 11:19:04 46224
ƿ̾˾
Զ࿵ѿޤ󤬡ΥͥϽпԤΤޤͤ͡Ƥ˲򤤤ѷDz򤱤ƤޤȤ
413ڡ 13:26:25 46225
uchinyan
Ϥˤϡ

ޤϡǰʤ֤ʤåפǤ
¤ζڥȥեΤ벼㳲ٱΥꥹΤǤ
轵ζդ٤ҤƤ򤳤餻ƤޤΤᤫϤʤƤޤä褦Ǥ
η̡ѥȤΤʤ긷ʤꡤΤ˷ǼĤؤν񤭹ߤʤ꺤Ǥ
ŪˤϡϡַǼĤɤߤޤפϥѥȻפޤ
伫Ȥβˡ˴ؤƤϡǽϰϤǡȤʤꤽǤ
λ

ơϡ
Фͤޤդ顤ʤۤɤޤǤƤʡȤǤ

ABC AC ˴ؤޤ֤ B ΰư D Ȥޤ
BQD ƱľˤꡤDQ = BQ = 7cmBD = BQ + DQ = 14 cmǤ
ˡAQR APCDAQ = BAQ = BAC = ȤơARQ = ACP =
RAD = RAQ + DAQ = (90- ARQ) + BAQ = (90- ) + = 90- = 90- DAQ = RDA
RAD RA = RD ջѷDR = AR = 10 cmȤʤäơ
BR = BD - DR = 14 - 10 = 4 cmˤʤޤ
413ڡ 13:46:35 46226
̴
46226uchinyan
uchinyanͤλˡٶĺƤޤ
褷̵ʤ餺ĴҤΤ褤ΤߥȤƲ
ʬǤʬˤ
ٻΤ桡 413ڡ 17:41:57 46227
٥륯åĥ
äȤǤޤ
äޤ֤οޤϽ񤤤ƤΤǤ10դˤʤʤŤ
äѤʿ̿޷񤷤
413ڡ 23:47:51 46228
ޥ
uchinyan󡢤ɤ򡣤Ĥ⤪äˤʤäѤʤǡʤפäƤޤ
iMac 414ʶ 2:28:19 HomePage:46229
Ϸ
޷϶ʤΤǾ˹礦褦˺ޤޤ
θ塢ŪʲõơΤ褦˲򤭤ޤ
ʳͤβ򻲹ͤˤƤޤ

Уâ梤£ѣä
ܣУáܣѣ£
£ääޤ֤¤ΰưĤȤ
£ġᣲգѷ
£äȢ£ĤȤˤ
ܣ£áܢܣѣ£áܣģ
ʢܣ£ġܣã¡ξˤ
ܣңġܣ£ѡܢܣѣ£ä
ңġᣲգѷ
£ҡ£ġݣңġᣴ
Ȥʤޤ

uchinyanͤĤ⻲ͤˤƤäƤޤ
ɤ
415ڡ 10:25:31 MAIL:takaaki-k@aqr.bbiq.jp 46230
٥륯åĥ
uchinyan
狼䤹ޤȤȲ⡢ĤɤޤĺƤޤ
̵ʤ餺ɤ
417ʷ 23:00:19 46231

ʤʤ򤱤ۤȤɳФƤ⤤ʤäѴؿθͥåȤĴ١ʿAQ^2+RQ^2=100ȥ󥸥ȤΣܳѤθФƤRQ=AQ^2-49μRQ=ᡦȻǤʤʤǤäȤ˻ޤ
ȸĤuchinyanε
uchinyan󡢰񤭤ޤˬڤߤȾʬ̡ʬˤuchinyanβˡȲҸ뤳ȤǤʤˡ̵翩äõʤạ̇̄äȤФ뼫ʬϤäΤ뤳Ȥǿʹ֤äƤʡ⤦äȴĥäƤߤ褦ʤȻפ碌ƤƤޤǤϡ¾γͤ⤽ǤˤȤ櫓uchinyanǤ
̵ϤʤʤǤ줫⤳԰¾ΥȤǤ̾ҸǤйǤ
418ʲС 21:55:49 46232
Mr.ǥ
ϡ޷ΰưʤɤͤƤΤǤͤ⤫Ф˶
ߤޤߥåȤˤʤäΤǡ줷ʶ˻ѴؿȤäơ
ȤϢ³Ȥ餵˺Ѥߤޤ
ʺƥǤ
ƬΥ줬ޤʤΤǡ٤ʤäƤ⡡Ϣ³³뤳ȤΰϤȤȤȤʤäƤޤ

uchinyan
ޤǡʬβˡ񤭹Ȥuchinyan󤬤ɤɾΤɤޤƤ餦Τ礭ʳڤߤǤ
ˤ꤬Ȥޤ
¾οͤν񤭹ߤȤȤ֤ޤˤ줰⡡ʤäƤޤ
419ʿ 20:34:31 46233