201912018IIIxOyOcossinxy02lOABABP22017IIIxOyl,,xtykttl,,xmmykmllPkPC1C2x:(cossin)lMlCM32016IIIxOy1C3cos()sinxyx2Csin()224.I1C2CIIP1CQ2C|PQ|P.42018xOyC23cos2sinxy(0,).OP(42,)4sin()5204.1C2QCMPQ.M52018C4cosl2sin14,2Ql.OxxOy.ICl()lC,ABQAQB.62017xl22222xtyttC4.1l2tMMC2(0,2)PlC,AB11PAPB.72018xOyl22xtyttxC2sin.1lC20,02lCMNOONOM.82018xOyC4cos2(4sinxaayaOxl()6R.1C2lC,ABAB.92018xOyxl3cossin30C4sin()6IlCIIlCABP(2,3)||||||PAPB102018xOyC35cos,45sinxyOx.1C21:6l2:3l12,llC,ABAOB.112018xOy1Csincos3yx11:222yxCOx.()1C2C()061C2CBA,AB.122018xoyCsin42ycos41xOxl2sin43=71l2ABCl|AB|132018lttytx(213231)xC)32cos(4.1C2),(yxPl24cos()3yx3.142018P202,0AAPQ.1QC2CM33,3M.152018C(2,0)2Xl1xtytt.1Cl2P1,2lCABPAPB.162018xOyCsin5cos53yx(R).1xC2l1cossinxtyt(Rt,)lCBA,32ABl1720184l22242xtyttxC4cos1lC2(10)MllCAB||AB.182018,,x,2sin2cos(0)aa222242xtytt.(1)(2)2PAPBAB,a.11OecossinxyOe221xy90:0lxOe90ltan2yxlOe2|002|11tan2tan1tan1tan1459090135(45,135).2P(,)xy90P(0,0)90l2ykx1122(,),(,)AxyBxy2212xyykx22(2)1xkx22(1)2210kxkx122221kxxk122221yyk222121kxkykxky2220xyy.(0,0)P2220xyyABP2220xyy2221()22xy22(,)22A22(,)22B202yP2cos222sin22xy0.21:2lykx21:2lyxkk224xyP224xy3:20lxyC3l22204xyxy32222xycossinxy5M5341sin()5204sincos100.cosxsiny100xy.C23cos2sinxyC221(0)124xyy.2(23cos,2sin)Q(0).P(42,)4(4,4).(3cos2,sin2)M.M3cossin102d2sin()103262.sin()1356.M62.5613(2,)4MC2216xy522222()(2)1622tt222120tt121222,12tttt21212(22)4(12)||||1114||||||126ttPAPBtt1071l4xy4sincos.2sin22sin222xyyC2220xyy.22sinON4sincosOM2sinsincos2ONOM21sin24440238ONOM214.81C4cos24sinxayaC224120xyxC24cos122,AB12(,),(,)66,12AB,ABC12,24cos120121223,12215AB9Il330xy1C4sin()62314(sincos)223C222230xyxy4IIl330xy122332xtytt52C222230xyxyxy29170tt61||||PAt2||||PBt71212||||||||||||||PAPBtttt221()tt822112()4tttt2941713.1010C(x-3)2+(y-4)2=25x2+y2-6x-8y=02Csin8cos646sin8cos63341)6334(A63sin8cos63432)3343(B8SAOBAOBsin2121)63sin()343)(334(214325121011sincos3yx1322yx.1C1322yx.sin,cosyx1122yx1sin1cos222Ccos2.6,,6,21BA,1C3sin2222.061C3212221.062C32.2321AB.121lsin=7----------------------------------------2cos=xsin=yy+x=7l70xy---------------------------52C12r=4----6127522d---------------------8ABdrmin524ABdr-----------10131C)32cos(4)cos21sin23(4)32cos(42222yxcosxsinyxyyx23222C032222yxyx2yxz3C4)3()1(03222222yxyxyxC)3,1(2tytx213231yxz3tzl)3,1(CC222t22tyx3]2,2[.10141202240xyy11P,xyQ,xy112,22xyxy1122,2xxyy221140xyy222224xy22110xyy52C1,01M1cos,sinMll33,3253672633231cos22M323,221015:1xtlytlcossin112sin()4.2(1,)2PP(1,0)P22212xtytt2222(2)(1)222tt.161Qsin5cos53yxC5322yx2C04cos6242Q1cossinxtytl1ykx6I5,0,3rC,32AB2d810322kkk1k1017122242xtyttl40xy4cos24cosC2240xyx52(10)Mll21,22.2xtyt2240xyx2230tt121223tttt2121212||||()414ABtttttt1018(1)==,=,=.4(2)=,,,==,.6=,==.8=,(),1.10