2019年山東省聊城市東阿縣第二中學(xué)中考數(shù)學(xué)三模試卷

a3a3522019年山東聊城市東縣第二中學(xué)考數(shù)學(xué)三試卷一選題共12小題，分分每題3）AB3C236

D

326ab＝abaA1B3D4A

BC

Deq\o\ac(△,Rt)ABCRtAcosB1

A

B

C

DFABCBCDEFH

1231313322123131332233222A

B

C

DO3LA

B

C

D2xAa1B1

aCaD1210xA+1210

B1Cxx210

D

xx1210AyB2yC3yyyyAyy

Byy

Cyy

Dybx+a0a++c0b2abx+31a2b0A

B

C

D48

2222AB1.25CD6212208ACD90二填題共5小，滿15，每題分mnnn

+

yx2m1+mmxy0x0y0By6yC4

1010三解題共8小，滿69）81﹣+|1

+

2

x

x10ABCD12α3610.60cos36tan36720152100080011220011

12ABBC1BC所60HAFBCEH

HF

HE11HE2E101211aaa

8y+bykCxA231

2C4FABF3+9ABCABBCDGDDEACE1DE2AC5CGA0D212xCC3ABPPAPAB

235323532635年山東聊市阿第中中數(shù)三試參考答案與試題解析一選題共12小題，分分每題3）Aa

ab＝ab1BAAeq\o\ac(△,Rt)RtAcosB

sin222sin222AA

1tanBD

BCCDBOOLdrdrrOL23drLOAa+10x2a0a1

123123321231233220xx210Byy2yCy236yBx1xx3y+bc0a2bb0xy0a+0x1baxx300+bx+yx

222222222222c0+b+c02c3ab3bb0ax++00xc44122041230C53.75DB3344455nnnn33345nn+2n+28+2D二填題共5小，滿15，每題分n

mnnmmnm+nnm+1n+1x0+20x2xx2xyyyxxyxxyxxyxyxyxxyxxyxxyxxyxxy

22222222xx

xyxyxy3x7xy2m1m214m4+10bxcaceq\o\ac(△,0)eq\o\ac(△,)0x6+4x+4y01yxFS

△

ABAmyyx+6yxyx+404EFFeq\o\ac(△,S)

AB

AB

OAA3B5

6n

三解題共8小，滿69）12x

1

+121

+12

x

2

1l

DFl

ADFeq\o\ac(△,Rt)eq\o\ac(△,Rt)ADABCDBEl

EDFl

F+DAF18090ADFADF36mmDFmmeq\o\ac(△,Rt)eq\o\ac(△,Rt)ADFcos

mmmmABCD40+601AAB

23BbA20%B401440C20%35%2135%B3BABCCABABBACB6P11FHE

2CBAGFMHNNGMABEGeq\o\ac(△,Rt)ABEM+

eq\o\ac(△,Rt)ANHHNAHeq\o\ac(△,Rt)EFHFHE

FHE45HEAFFHE45

2FECBAAGFMHHNAGNABMGHNGEeq\o\ac(△,Rt)ABCACB

ABBCtan601

eq\o\ac(△,Rt)ANH45AHEM++

E+

1010002a1a%a%x2

1212x+102210x4%

1a

10

+4

a

04042%1A2BABF3y+byk0A3B3k6bk6yxy2

eq\o\ac(△,S)ABF3x041ODADAB90AB

BDCDODABCODDEODDE2BGABO90CDBCCDeq\o\ac(△,Rt)RtBCGCGDEOADBCABBDCDODABCODACDEACODDEO2BGOAGBBCCDACDBCGeq\o\ac(△,Rt)ADCeq\o\ac(△,Rt)CG

22222222222222221Dx03yB2ABABBC3

PHxPABDx20ybx3B9+53abc3y

x

xxD220359ACCm0313m

C4

04

0BC