当前位置:首页 >> >>www.eosource.net

xiguayingshidaquan:直线与圆常用公式

13174932153 wyxwyx hgc777.com 7721lb.com 22878com 584dabao www.pj7542.com

11177381com www.jsc555.com yh2836.com wwwtyc928com qieji14 3388777jalapsikixkino yabo4667.vip

子丑教育

正余弦定理-三角形面积
1.正弦定理:

a b c ? ? ? k ? 2R sin A sin B sin C

R 是 △ ABC 外接圆半径,k 是直径或比值
变形① 变形②

a ? ks i n A , b ? k s i nB ? ,c

k sin C

a b c s i nA ? , s i B n ? , sC in ? k k k a sin A a sin A b sin B ? , ? , ? b sin B c sin C c sin C
a: b: c ? s i nA : s i B n : sC in

变形③

变形④

2. 三角形面积公式: S△ ?

1 1 1 ab sin C ? bc sin A ? ac sin B 2 2 2

?a 2 ? b2 ? c 2 ? 2bc ? cos A ? 3.余弦定理:求边形式 ?b 2 ? a 2 ? c 2 ? 2ac ? cos B ?c 2 ? a 2 ? b2 ? 2ab ? cos C ?

? b2 ? c2 ? a 2 ?cos A ? 2bc ? 2 a ? c2 ? b2 ? 求角形式 ?cos B ? 2ac ? 2 ? a ? b2 ? c2 ?cos C ? 2ab ?

勾股定理是余弦定理的特例

? A 为直角 ? a 2 ? b2 ? c 2
4. 其它需要用的公式

? A 为钝角 ? a 2 ? b2 ? c 2

? A 为锐角 ? a 2 ? b2 ? c 2

?sin( A ? B) ? sin A ? cos B ? cos A ? sin B ?sin( A ? B) ? sin A ? cos B ? cos A ? sin B ? 两角和与差公式 ? ?cos( A ? B) ? cos A ? cos B ? sin A ? sin B ? ?cos( A ? B) ? cos A ? cos B ? sin A ? sin B
cos 2 A ? 2cos2 A ? 1 ? 1 ? 2sin 2 A ,
sin 2 A ?

? ?sin 2 A ? 2sin A ? cos A ? 2 2 ?cos 2 A ? cos A ? sin A ? sin A ? tan A ? cos A ?

1 ? cos 2 A 1 ? cos 2 A 2 , cos A ? 2 2

?A ? B ? C ? ? ?sin( B ? C ) ? sin A ? 三角形内角和公式: ? ?cos( B ? C ) ? ? cos A ? ? tan( B ? C ) ? ? tan A
5. 公式变形的两种转化思想 其一:全部化为边 其二: 全部化为角
1


以下是今天幸运会员获奖名单

7739lb.com,news.163.com,235023.com,yabovip2537com,wwwyc91com,niaochaoyule,lh4168.com,23367com,41664166,www.44798.com,556636.com,alksyang

www.76661.com,ss345993032,www.26670.com,www.616800.com,92449.com,www.hg0840.com,www.6201o.com,771ttcp. com,ss88888,jp1019.net,ag3171com,www.5337744.com,javhd4k,www.hga8800.com,www.705382.com,www.8fhfh.com,gzlsyq.com,403756901,qjwdtc,www16365com,bo227777,23331com,64400h.com,www.95555.com,www.487cao.com,www.199877.com,jiejiegao,pj5684.com,www.hg1246.com,www.999908.com,sewanglaoludi4se,www.858292.com,cj801498,www.6979001.com,5364cc,hg367com,wwwxpj4839com,665522.com,NONONO5588,www.2525qq.com,www80567ycom,2715691274,手机国语自产在线,w423277515,2910226993@qq.com,www.124144.com,www.uuu646.com,www.79av.com,www6667786com,qpby040.com,www.09515.com,hg3837.com,wwwgef999com,www.7269.com,ca88youhuishenqing,www.aaa,wwwssc682com,sg111.ⅹyz,sensen,www516000com,wwwxbet66com,www.620111.com,z3335.com,www.eee559.com,zl638747,www.4254.com,www.90180999.com,孟村吧.百度贴吧,66618,www.3535113.com,www.buyu055.com,bocaibuyuyule,1327vcom,7kafvm2qq9,www.890jb.com,ppp9900,zd788.com,www.yh5231.com,www.vic808.com,玖玖资源3658稳定更新,www.25gmgm.com,cpowerd8,xpj4472.com,wwwyc898com,www.2599j.cc,kj83com,www.686686.com,tywchongqing,52011好色axax,zwy8,www.sx8800.com,www.npointhost.com,585bx.com,www.283657365.com,www277net,www.ns113.com,miaoze,a198488,www855666com,lehu107.com,www.privatecams.com,kb7284com,www.102799.com,qyy1474com,bet28888.com,m.ks6632.com,cl11399214,13588com,www.187999.com,835803com,qingqin,电子邮箱,www.b3650044.com,WWW.878877.COM,9663x.cc,mahuan889988@163.com,353303com,WWW.06306.COM,WWW304765COM,xpj5082.com,wwwbet3329com,cp3869com,www.yh3894.com,www.5599msc.com,www.janeeyer.cn,js543com,wan6532.com,www82369com,www.0987.com,ag359com,ylyy77.com,www.286ff.com,gcgc48,www201932355com,www.kpd15.com,6696g. com,222ee最新网站黄网,wanhong,mg5079.com,www.推车.com30,www.671144.com,www.mediawiki.org,www057765com,www.6789xx.yy,wwwhg5304com,baoshuang,xinpujingyulekaihuwangzhan,www022789com,476848.com,sheng1771,agent.xpj0878.com,www.0128s.com,wwwck8vip,www.088648.com,wwwdtapcinfo,www.7xoy.com,www.97sese.com,www.4130.cc,人妻熟女有码中文,788c788qh,pp628cm在线视频,www.1314ge.com,angel668,日本道二区视频,WWW.ZZYLC9.COM,wwwxy0102com,www.dd325.com,www.g95599.com|

www.bet6475.com,www.dageda33.com,292kkk.vom,bv806.com,www.67870q.com,www.xpj68996.com,www.js0394.com,wwwhg0325com,ag6927com,879232com,wx1314,5257o.com,www.liyinzs.cn,www.5182777.com,yb7271vip,cai15986,wwwty1899com,www..94cx.com,notouteng3,60788.com,kj668.com,benben,www.335566.com,ipbetcc,900w.cc,www.ethiopianairlines.com,15ga丫boys少年同志,hg1023.com,ag.vns0663.com,www.js9499.com,80850k.com,lx9888,www.cnxa3089.icu,www.681555.com,www.088am.com,http//700711.cnm/,WWW.HG3088.COM,999kj.com,yb7032vip,gdgdgany1979@163.com,www.8283.com,www.dy57588.com,wj丶vc旺角码报,992888.com,88cc.live,ag.g7817.com,www.882js.com,qq33599ff,www.7123.com,2268o,hg2148.com,sakai.cqu.edu.cn,badada,www.tom1121 com,www7788a8com,www.3159wine.com,www8015899com,www.4138eee.com,ljb04.com,https://m3u8.40cdn.com/,95445p,www.061wy.com,wwwmgm0699com,ssnh39.com,www.194hk.com,www.77didi.com,www.78757.com,sc588,www.pj59555.com,jizz mobile xxx,383ci.com,yabo8394com,www.xinai6.com,www.imy2010.com,wwwxg,www.aomen67238.com,www.648.com,www.yule555.com,www.js775.com,www.xzx28.com,838740com,D2PT.COMR,WWW.XPJ3333.COM,www.123aaaa.com,www434299com,www.g0304.com,www39091com,biao1119,wwwxy2788com,www.9869x.com,www.amhg400.com,wwwhg5141com,www.frzlvshi.com,www.pj65599.com,xyyl007.co,bm3088com,www.29qz3.com,www9393hla,www.888690..com,www.8694c.com,www.9ibomao.com,474l6.com,881193com,www.07526.com,100lu.com,www.222luus.com,sehu10最新网站谁知道,bet9954com,xpj3470com,www.22137.com,www.344197.com,wwwtxbbcom,balirenxianlu,tianyu325,WWW.5551388.NET,www.9906x..com,181919.com,jc666com,321msccom,ag20com,www.33136p.com,qy5506com,qq123,库里庆生开派对,www.9599011.net,www.hg83.com,aiaiok,www.131549.com,www.xn--6u6af.com,812bx.com,www.tk15.net,daomushijitxtxiazai,WWW.992298.COM,www.lks88.com,haba3363,vip6634.com,mg7543.com,love317.com,nn5180,www.38848.com,wwwhuo85com,www.hg22211.com,UUU359..com,www82193com,www7774123com,sbd050.net,282602936,3207.com,ht6600.com,WWW.76SUNCITY.COM,www.65993.com,www.80029.com,luanma31,wwwppcao333,古阿扎视频2分51秒,243j7com,bet7254com,22366网站,www.bt6080.com,91sm社区,www.yh4999.com,wwwericiicom,vns8d8,www.sun2538.com,8836h. com,www.565888.COM,wwwcpk777com,4340q|

www.6681414.com,www.lyqp.com,renshengruozhichujiantxtxiazai,WWW.LRSDBJ.COM,3644882.com,www.ylg300.com,agent306367com,yeer402222.com,www.5726686.com,malaixiyabocailuntan,amvip73,wwwmgm099com,cbhnjjj,vns4098com,WWW.JU8.COM,jingcaizuqiujinritouzhuremen,lehu5378com,www,K b 3 55 .com,wwwo3065com,273970,3567.com,www.66567.com,www.dasanba1.com,20002.com,www.3ya888.com,www.7893w08.com,www.36744.com,www.0034189.com,www.3320033.com,bet11.com,m1414,www.63969.com,hg2772com,99abcd网址最新获取,www199001234,www283777com,www.2734521427.com,yulechengzhichihuabei,www0474com,www.g7214.com,WWW.K8268.NET,tyc4342.com,897523471@qq.com,666sss,-www.kgsz . xyz,hg420.com,qwe1230,blb492.com,fufusheng,js1428com,2y556.com,lvdds,a1313,yule.com,4012345.com,9058810.com,www.388msc.com,caolui000,www.4255vvv.com,www.836638.com,wwwxpj6489com,www.092sp.com,www.7733700.com,wo7788,www.1333219.com,188bet.com,cnm444,9791.com,www.11105.me,71373355.com,cswaitmi,hubet.yabo309.com,2061371,www.268888.com,wwwsh9999com,0769kk,www.42365.com,ag8083com,www86betcom,zd3409com,7wnsr.com,lvze,www.186293.com,www.226cp.com,WWW451794COM_WWW.451794,COM,soulplus,www.67571.com,vns2051.com,xpj4011.com,5177tv,www.981921.com,aomenyinhe0208xiazai,125517.com,www.hg2015.cc,hy88040.com,wwwvni99com,www8010518com,8393.cc,www.hgdc111.com,yh6745.com,276345.com,qyle.net,www.112299.com,www.ssc249.com,yinyintang,www.5a5a5a5a.com,wwwjsdjtcom,wb1391com,c123456gjj,yabovip8707com,WWW,6741,com,www.105399.com,301365.com,www.xh66td.com,913444.com,ag7099com,www.2222456.com,www.103111a.com,3999kkkcom,www.3983240.com,www.222an.com,www.da2277.com,www.p8488.com,www.632276.com,7769065.com,liujialingjiqingxi,ccc26,www.892010.com,www.2209bb,www80166COM,zhongshengxiaoyuanzhuimeijitxtxiazai,www.654592.com,www.424999.com,tiny4kcom中国大陆,WWW,toutouaocom,wfs4041,chouge,www.3650200.com,wwwbetok365com,www.g99955.com,ibao1688.com,m.w66158.com,www.c970.cn,www.67566.com,www.980705.com,www.lv0077.com,yabet0891com,84556.com,anzhuo4gmb76cn,meinvtuojingguangshipinapp,xiudu最新版,guorenzaixian,www.jinsha00.com,wwww.pornhub.com,www.xpj1139.com,sun8288,wangzi188,www.f7v6.com,mg7240.vip,www.852997.com,25856ylzz.com,ag1325com,k138k138id,www.kkk151.com:www.kankan38.com,xm00013,www. 6ffav. com,xianjinyouxixiazaisong,www.b853.com|

www.pu750.com,634447.com,r9898com,www.630900.com,www.438111.com,long6101com,www.42323.com,www77766com,ks867com,hg00379.com,www.pj8728.com,long0323com,05msccom,www.8353,yunjie888,WWW.91222.COM,yf531.com,www.148sihu.com,www.543kk.com,www.xdpibn.com,www78198com,www.99tianji.com,WWW.5555SJ.COM,www.22cpa.com,www.753msc.com,www.gonome.com,ssnh91,867390com,8899033,26668dcom,hh23456,www.3356r.com,69fadacom,www.46722.com,betvictor28.com,xb1.com,YMDD173http://www.by1326.com/,aV12.C0m,www.caocaogg.com,42733.com,www.pj6606.com,从前面动插图前如有声音,wwwpj52068com,2472574100,seboshidaohang,ks3939.com,WWW.888030.COM,www.yeah.net,www.3277138.com,wwwyl7818com,WWW.279867.COM,824696com,youfa5169com,lx88070,www.bbb920.com,WWWHAXIUCOM_WWW.HAXIU,COM,www386878com,dgaabbb,w8385.com,www.agent.673838.com,www.24tt.com,898845.com,www.lilai8866.com,www540747com,225605com,870000.com,www11188145com,xajb.51tz.com,nvshengzimo,2017xinguojiyulepingtai,c588.com,www.650303.com,8ag855.com,www.63590.com,88zhongfawang,www.agks76.com,xiangyanxiaoshuo,13399882322,richanmeiguoguanwang,gcgc51.com,ag81742,wwwwx2266com,wwwfc7773com,lehu46,wwwb22666com,wwwok1699com,40890.com,zheng2013,www.hdu11.com,www.js4708.com,www.36748,yinoyinoyino,www.p41669.com,www.gdkeyomi.com,www.r81122.com,www55000com,15110202456,wwws3405com,www.w7080.com,www.tuku.122166.cdm,WWW.CHA8899.NET,bao8899,ag89988.com,jueban.89919.com,vns6429com,matong110,www.341855.com,baba8899,WWWMGM90NET,WWW.T977.COM,www.haohuob.com,https: //sttc. sh. tobacco. co,dfhyylccnet,www.gougou.com,hg1658com,www.w9628.com,fenglang666,www5065fcom,www605365com,www00330vcom,www.ddzworldtour.net,fu80698,www12222com,www.cp5152.com,www.2222k8.com,999866.com,www.3544c.com,www7279com,145678.com,www.vns4022.com,wwwhaoady12,hele8denglu,www.43659.com,agc735.com,qianshuhua19,cheng0688,www.oo67890.com,www.9646n.com,WWW935888COM,zbz0605,www.ppp80000.com,7873.com,www.784506.com,33rrrcom,www.et046.com,hg8505com,1294r.cc,www.1490.com,vns177.vip,aaaa11118888,www.464464.com,www.664.so,www.bm1416.com,lycp86,www.008dyw.com,www.xzcsi.com,6559902.com,www.4180m.com,m.vvv713.com,300789com,wwwa91880com,www.mg887.com,ag5137com,www.ku 774.com,702ks.net,c1994520,hongmeiwang@vip.qq.com,www2222746com|

以上会员名单排名不分前后