2020-2021學年上海市楊浦區(qū)九年級(上)期末數學試卷

1、2 2 2 2 2 學年上市楊浦區(qū)年級（上期末數學卷（一模） 一選題本題 題每 分滿 24 分2 2 2 2 2 y ACBD C 00 yx Ay a0 x0 y AABC sin ABCDAB A 30601806090ABC D B 35 A AB45C55D65 B B A A 35 A1ABC DE ABAC BC A B C D DEBC DEBC DEBC DEBC D B A | |B C D B C D、 | 2AOB DOC AOB DCBAOBOBCOBCAOB DOC2 ADBC BD OAOB DOC AOB DCBAOBOBCOBCAOB DOC2 A C B D

2、eq oac(,S) eq oac(, ) eq oac(, ) eq oac(, ) COB B AD A D AD eq oac(,S) eq oac(, ) S S + S eq oac(,S)AD ADAOD AD B AD A 32 2 2 2 22 2 2 2 2二填題本題 12 題，題 4 分滿 分 +83 2 +8 yax +1 1a0 y1 +1 1 a11 2.4 130 x 1 2.4x + 130 x50 50 AB 4 P 2 BP P AB 4 2222642 2 2 2 2 2 2 2 2 2 2 2 2 2 22 2 2 2 2 2 2 2 2 2 2 2 2

3、2 11 y x+3 x y 3 y x+3 x y B ABC y4x1 y0 x1 3 x0 y A ABC x A y 2 k A + A222 kk y y 22 y yx+ + 3 yx + x xx 5 A DE AC CD AOE ABCD CDABCDCDAOE ABC ACB ABC CGBC cosGCB D DGCGADBD CDBDAD3DCB eq oac(,Rt)ACB 6 B D G ABC CG1ADBDCDAD2+13B eq oac(,Rt)ACB B GCB ABC C10cotB D AB DEFG DEFG GF BC BCt AC2ABtt BC2

4、C H GF M CH4 CM8 CGF x C90 7B t ACttt10 2 CH H GF M DGMH MHDGxCHAB ACBCCHCM8x GFCGF x ABCD BC CD AD AHBC H C CEAD 81 1 1 11 1 1 1 1 11 1 BC C AD E eq oac(,Rt)ABH tan AH3BH4k AB5 kAH6BH812CHBH12 D+90 ECD eq oac(,Rt)CED CD5DE34 AD+ABC 中C60 B BB AB D AB DB 91 1 1 1 1 11 1 1 1 1 11 1 1 1 1 1 1 1 11 1 1

5、1 1 11 1 1 DE D DEAB 4560 AC AB AB C ABC ABB DEAB AB AD2DEAEDEB E +AB DEDBAD 三解題本題 題滿 78 分） 101 12 1 21 2 2 2 1 2 1 21 12 1 21 2 2 2 1 2 1 21 242 A212 x 2 +a y +2 x 21 1 P y x 0y D ABAC DE M BM BC AM DE 12 112 1 BM DE BC 2 DE DNBM1 2 2 12 C A ABC 6445BC A 0.1 1.41cos64tan642.05 ADBC D AD A BC D eq o

6、ac(,Rt)ACD C45tanC CD eq oac(,Rt)ABD BBD tanBD2.05+CD50 AD+ AD50 AD33.6 33.6 132 2 2 2 AD BD E A AFDC F1 2ADBACD DF DAF CBE 2DBC DC DFBE ADBCCBDADF+180 AFCD+DAF180DAFDAF ADDEDB1 142 2 2 2 2 2 2ADBADB2 2 2 2 2 2 CBDCDEDCE DC DB DEDBDFBEDC DFBE DF xOy ym C C D A 1n1 P AP 2 Q 3 PB m +4 C1 m 2 1 F 0 OFP

7、F t PF 3 m +4 C11m 1152 2 2 2 2 A312 2 2 2 2 22 yxm C0 m 4 2 yx x 3P1 PQ 0P1tanPOF3tan3tanPOFtanOPQOPQ OFt 3 +t1 0 PF x 163 2 m eq oac(,Rt)ABC 4 D C EDBADC AD AC 1 D DAB 2 F AC CDxCF y 3 DF AGE CD DHAB H DHAH 2 2 A AC FE AT DE AT ACD AF2CDx3CFD ADH F 1 D DH H17ACB CDB90DHBH AHBH3tanDAB 2 A FE AT DE AC RATACATADCEDBAKD ADCDAKDADKR DKA90DAC+DAK DACR18DADRDC+90+R90 45AEAASAFAKTAFAFT AFT