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2、.fifflaJ:i:.=.11HR1,f!/J,ffl:it#ffl 7mq:i 1JflJ lt4,YIIA.lflJ It:JUJfit:tmF:*(,t)60 70 80 90 100 Aft CA)7 12 10 8 3 A.701,701 B.70 7,80 7t C.80 7,80 7-D.80,t,70,t f(-)ft:J z.n 6.A.LDAE=LB C.AE/BC 0 B.LEAC=LC D.LDAE=LEAC C E B ffi7.IIOO laD B O C ffi9/i00 7.t,nOO,BOP5f?tLAOB,LAOB=60,CP=2,CP/OA,PDl.OA
3、-fgD,PEl.OB A.2 B.fi.C.Jj D.2./3 s.-:t-1-o4 41-.,t:ffllPJ,3*,re1rJ?tJJ1J;1.J 1,2,3,4,:.ffl.:li!JUB-1-/N:tFP:litJ,m:ii!mm-1-/J,3*.9!Uwnxm:liJ/J3*1J1Jlll-f-61Jffl$3 1 1 1 A.16 B.16 C.4 D.8 9.tin 00,iE1J%ABCD Ji!:4,BC;1;11J*il O x,j BD TB E.9!UJt$:frffi:h A.1t 3 B.-tr 2.C.6-1r D.2.Ji-1r IO.tm!E,D.ABC 9
4、J,LACB=90,LA=30,AB=16.BP tit1 AB.t-B.iiB P fl:PQl_AB,i.E.;1.JP,3ci11AC C!litICB)rl.KQ.iiAP=x,.6.APQflJffi:ty,JJ!tlyx z.1a1 flJ mfl m at:1,J&I(-)11.#ff:fi-1 12.M:a:m1 1 13.tmOO,Bd 13 14.:fnJOO,-;/DAB I.KM,icMQ3cCD 15.tmOO,tE Rt.6.A:#J.ACD*AD .=.1f3mlfit,DE aJic:tJ=,-ll(*j;:11 16.(8:fr)5:,tfiu,-ff:00
5、8(.Hll,!J!U D O C 9Ri00 r1aD,PE1-0B.2./3 4,lififfi.t!#tili-i-f-6 eJffl.$1.8 Dr ti,E.!J!UIY3$.2.fj-7t BJ:-g.:l:J:gp fi:hJ y,Jiltl y X,.D=-tlII C4iJJ!3*15*)11.*=ef.=s-1-21+.!.r1=3-12.fef:1Afflx-t)t,9!tl:fAffieJffl:xmf!M-1-x2.13.00,Bdby=!_(kO)n1i1fl:=.Ji:1%0ABit10AB9l1D,Jl1Iftlit1 X AB:ffiTJa C.*,.(A e
6、J(-6,4),JJ!tlb.AOC lfliffiffl-X ffil300 Mc Q M B ffi14JIOO ,AB E m1s.:moo 14.00,:tf:OABCD ti,AB=S,P,Q J1Ji:lACB9.:.*g,*DPABT 1aM,_g;:MQCDr1aN,Y!tlCN _ _ 15.00,:tf:Rtb.ABCt,LACB=90,AB=5,AC=3,1aDBCJ:-i;/J2,AD,b.ACD 1G AD 1T,#.C ffi:tf:t.(E!ii:,it!&DE ABT g F,:i!it;BE,l:i.DEB 1Iftl.:.ifJ%fM,DE fiJ*-=,r
7、nu1 c,t;:j;:,m s 1-/J,m,*15*)1 2 1 16.(8*)9G-ft11,W*ffi:(-a)+(1+),;ttq:i a:fJ:-Ji a Ji eJff a 2a liM.fi(-)J.!(6:vi)17.(9,r)t$t7ffJt:fi:.1J-J.9i-f*lfffii;tJiPJJ.4if&tl!llR-J.9i.m7m.#*r%*mmmm.Afl!iO-45-o n JE.1*ffi;iy!l-i1*:J.ttt!.till El 00 I III 2 iWti 1?,1.t m,m.Mr?tl fsil Im:20.(97)tE*tl!J:,F.i-B
8、00riiF.i-M,(1)*l:t(2)t=F.i-p(1)m=21.CIO?2)iffl1:.tffilJ*%#Ht00:#.Ht f!Bffli!fJ,Jmmu,:ffJ1JllJ!jtln+1JJw1 18.(9,t):PJ:100,BJlABC-f-00,AB J!lI*,OD/AC,AD=OC.1)*YE:lmli1%OCAD:/!.ifltrlm:lti%:(2)fl:(D3 LB=111,ll!l:itim OCAD!%:3LB=_ a,t,AD00ffli7J.19.(9,t):PJ:100,-AB jgj 6cm,tEIE*1Jinlff-t-31-rn:lt CD,tEi
9、nZJaJil!mL M CB,M,D.:=.R.i:tE-*1t.1:)!lt!HiitiitJ9!A,:1119!C 1qJ:ffJ?lj 37 60,tE A:tfU C 1J1qJ:ffJ 30,!JltllA-rn:tf CD lt-Jjgjt.(sin37:0.60,cos37:0.80,tan37:-0.75,./3:I.73,ffiJlj 0.lm)J.i(-)(1)5K4ijJ(2)=!r jjlJ 3K pt aJ:i!:flt.-;t:.,#*tlL!22.(IO?-:iii ABCD aJj 20.(97):tzllOO,tElrff:lt;ji:p.OABC(l(Jj
10、if.iO.ljf.iffi:r,A,CJtnU tE$11tJ:,F.i B(l(J(4,2),.a!ly=-!.x-t-3 AB,BC=f F.i M,N,.<isy=2 X lJ OO&itf.i M,N.0)j(&1JmlJMtfr:it;(2)g P tE x*tf!J:,.6.0PM lJmil9-11itl BMON lJffijffl,;tg P 1J.Y.X 21.oo:$t)tE-1fr-j&m&tJr.*n+&ffltftim4-re*il!A tt.ffJI=,-f!Bfflff 10 fi A f&jIJ 20 fitljIJllf-1.fl*tjilij 400
11、0 Jt,fflff 20 fi A t&IJll 10 fi B tJ1:EtlntlJtJwJ 3500 G.(1);Jtfijfr A Jj!J*pt=B t&IJ*llt1JfflfJ,JitiJ;(2)ffllfij-?1(:lltiij#t&IJ 1J*nt 200 fi fl=fill l=l(el.1 fi),Jt:P B tt m*11tlJmAt&m*ntlJ2M ffi.&ffltftiRtt-#-fflWAm*#3Jili,ltJi!ij1J:fi:*:ffi:.22.(IO?)WJlJ!l,:(11:itIABCDtp,AB=AD.LB+LADC=180,E,F:$-
12、jIJEI/itl%ABCD llJitl BC,CD _t,LEAF=.!_ LBAD,i!f&EF,i.l EF,BE,DF zje 1J:i:2 A B C.(-)Cl).ffl.ilHIUI D.ABE tie A jJ LFDG=l80,fll)F,D,-(2)lt31:tzll 00 2,tE 00 1 lJ f:1 1JJ!-S;!lJ:,LEAF=.!_ L.2 c 3)ItUt0:6Jl:till 00 3,:tf.t.ABC g:BD=l,EC=2,Jlrj DE flJ 23.(11:$t):fm Ill:Jt*tfl/X=-1,P(I)3JtJM!?J(l(J(2)R.
13、(P 1JMl c,HJIJ,k(y=-x:w-.t.,X,lO.frB:p B ifJwJ:li jJIJtflm 0911:i:c 1),ffiilHf.tl!I ABE tjf#.A a,j#Mt ADG,(t AB l:j AD ffi:*.EB LB+LADC=l 80,LFDG=180,!lllRF,D,GR;Jt.liEliAFG!a,i!&EF,BE,DFZ.fiijeJffl:7:,;i _ _(2)lt51$:fmm 2,:(Ell!1 eJ*-flFf,ff BE,F EBffii)leJ!LjjJ1tJUll9i11m ABCD eJjft CB,DC eJ-tatJ:
14、,LEAF=.!_ LBAD,:itit EF,ffi EF,BE,OF Z.faleJfffl:7:,:ttiliillJ3,2(3)Jt*!H-6 JI:tul003,tEABC91,LBAC=90,AB=AC,#.D,EtE:itl.BCL,.LDAE=45.BD=l,EC=2,Jiltl DE 89*-23.c11 7):fmOO,t1Mt x 3cr#.A l(I#.B c1.o),l:j Y 3cr#.c co,3),X1Jj;JX=-1,P:J;J!fi!_t=llll89-1-i1J#.C 1)3tWIeJ/8tfi3:#.!=Hl:JtffiR:(2)g P eJ:J;J 2 a,j,*#.P e!*l:O:*.*):(.*)-;(.
