2020-2021学年北京市朝阳区高一(下)期末数学试卷

学年北京市朝阳高一（下）末数学试一选题(共10小，小分，共50分

i

zA1

B1

C1

D1PABCDABCDPD2A18129D4A

B

C

DαACABC

BDA

B

C

D60%6

1

2

3

6

1111111112123

960950860ABCD

+

RA3B

C3D

80706560605740%A657075D1ABDEMABCDMAMA

B

C1D10|1|2|3[1++A

B2C

D二填题(本题小题，小分共30分11k3122+a1i

111111111111111328141010

.15ABC2MAC16ABC①②③④三解题(本题小题，分。答写文说，算骤明过)

17

cosB2Aa18ABDFBBDDACCAEF19n

[80[0[40[50[6070[70[80[90100]

ECntD3[40[5060BB10020

ACDE①②③sinCBCED

nnn1122nnknnn1122nnkk+1k+212n①

②③

21A1Anjj

ynff{A}

T{A}TaAeq\o\ac(△,A)eq\o\ac(△,)A{A}ll

j

j

ABCDABCDABCDABCD参考答案一选题(本题小，小5分，分在小列的个项，选符题要的项

izA1

B1

C1

D1z1PABCDABCDPD2A18129DPABCD中ABAD36PDPDD

PABCD

SPD64A

B

C

D2

P

αAC

BDnnnABCA

B

C

D

0

sin0A0C

60%6

1

2

3

6

ABCDA

850860890890950890C92070970C

D

++8909002]2

850DD

+

R）

1111111111A3

B2

C3

D3D

80706560605740%A657075D507595C1ABDEMABCDMAMA

B

C1DA01100xy11MCxy0x+220AM

1212311212313123110|1|2|3[1++A

B2C

D120||

[11]11λ

++C

二填题(本题小题，小分共30分11k3

k3122+a1i

2z+a2+21ia2

n1n1n1212nn1212nn1n1n1212nn1212n132821x14x21+14+

141010

.xxx+x+x

[x2x2•x2]x10

x102

++x10210+•+s

[x10+

++10210

]

15ABC2MAC

AC

maxmax2D0B10MMx0x1fx

1xx

x1fx3x

16ABC①②③④

①②③ABCnn①35①②324cos0

111111③ABCcos

cos2cos2

B1A2③④A3BBsinA2

2

B3④①③三解题(本题小题，分。答写文说，算骤明过)17

cosB2AaABC

218ABDFBBDD

11111111111111111111111111111111ACCAEFABCDBDFBBBEDFDFBDEFAEFEFAEFBDAEFABCDBCABCDBDBDBDEFEFEFAAEFACCAAEFGBFGACDGCCDDDFDFCGFGDCFGDCDCABFGFGABGFAFACDG

111111111111BEGCEBGECCAEF19n[80[0[40[50[6070[70[80[90100]

ECnt

D3[40[5060BB100

1t101tt[50[5060[[502B

0.04+650.14+750.2+850.35+950.2580.720

ACDE①②③sinC

BCED①

②③①③

ABC

IIABC

2

AC2ACcosACAC52

AC5②③

nnn1122nnknnn1122nnkk+1k+212nn

sinCBAsin+cosBsinA

2

21A1Anjj

ynff{A}

T{A}TaAeq\o\ac(△,A)eq\o\ac(△,)A{A}ll{}

j

j

nn+2n212nn+2n2121nk+2k+1k+1k+1kk+2k+1k+1k+2+2nnn+1nnm+k1m+k+k2a

ff

T

{A}Tn+1fn0n⋅⋅⋅aa0aaaaaa

eq\o\ac(△,A)eq\o\ac(△,)AAAAeq\o\ac(△,A)eq\o\ac(△