Kiểm tra một tiết chương I lớp: 9 môn: Hình học

Trường THCS Xuân Áng KIỂM TRA MỘT TIẾT CHƯƠNG I
Lớp: 9__ Môn: Hình học
Họ và tên: ______________________
 Điểm
 Lời phê của thầy (cô) giáo
ĐỀ BÀI.
Câu 1 (4 đ): Cho tam giác ABC vuông tại A có đường cao AH. 
Biết HB = 9cm, HC = 16cm. 
	a) Tính S?	b) Tính và ?
Câu 2 (2đ): Biết Cos x= 0,2 . Tính giá trị của biểu thức:
A = ( 1 + Sin x ).( 1 - Sin x )
B = Sin2x.Cos x + Cos3x
Câu 3 (4 đ): Cho tam giác ABC vuông tại A. Giải tam giác, biết.
BC = 2 cm và = 600 .
AB = cm và = 450 .
BÀI LÀM
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Trường THCS Xuân Áng KIỂM TRA MỘT TIẾT CHƯƠNG I
Lớp: 9__ Môn: Hình học
Họ và tên: ______________________
 Điểm
 Lời phê của thầy (cô) giáo
ĐỀ BÀI.
Câu 1 (4 đ): Cho tam giác ABC vuông tại A có đường cao AH. 
Biết HB = 9cm, AH = 12cm. 
	a) Tính S?	b) Tính và ?
Câu 2 (2đ): Biết Sinx.Cosx= 0,6 . Tính giá trị của biểu thức:
a) M = Sin4x + Cos4x
b) N = Tan x + Cot x
Câu 3 (4 đ): Cho tam giác ABC vuông tại A. Giải tam giác, biết.
a) BC = 4 cm và = 300 .
b) AB = 5 cm và = 450 .
BÀI LÀM
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