8/2/2019 Toan 10 HK2 Kim Lien Ha Noi

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Trng THPT Kim Lien Ha Noi

e thi hoc k II Lp 10 Nam hoc 2010-2011

Bai 1 ( 2 iem)Giai he phng trnh: x x x x x x

x x x x x

3

2

3 1 2 1 9

1 1 1

1 3

Bai 2 (2,5 iem)Cho phng trnh x x x x m 24 6 2

a) Giai phng trnh taim 4 .b) Xac nhm e phng trnh co nghiem ; . x 2 5

Bai 3 (1 iem)

Cho tan x 2 , tnh gia tr bieu thc:

sin sin .cos cos cossin sin .cos

x x x x xP x x x

4 3 4 2

4

3 4 5

5 3 4

Bai 4 (1 iem). Rut gon bieu thc:

cos sin cos cos tan . tanP 3 7 32 112 2 2 2

Bai 5 (3,5 iem).

; , ; : x t Trong mat phangtoaoOxycho iem A B vangthang d co phngtrnh y t

1 25 1 3 1

2

) .a TmtoaoiemC thuoctructungsaocho ABC cantaiC

) ,b Viet phng trnhngtron C iqua A B vacotam I thuoc ngthang d ) ; ,

.c Viet phngtrnhng thang a i qua iem K va catngtron C tai hai iem phsaocho tam giac IMN codientchlnnhat

2 2

Chuc cac em mot mua thi thanh cong!