
Bài tập trắc nghiệm Toán học: Lượng giác và Hàm số
Quiz
•
Mathematics
•
11th Grade
•
Practice Problem
•
Medium
Đào Vũ
Used 2+ times
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35 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho α thuộc góc phần tư III của đường tròn lượng giác. Khẳng định nào dưới đây đúng?
sin α > 0; cosα > 0.
sin α < 0; cosα < 0.
sin α > 0; cosα < 0.
sin α < 0; cosα > 0.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Một chiếc đồng hồ có kim chỉ giờ OG chỉ số 9 và kim phút OP chỉ số 12. Số đo của góc lượng giác (OG, OP) là
-90° + k360°, k ∈ Z.
-270° + k360°, k ∈ Z.
270° + k360°, k ∈ Z.
90° + k360°, k ∈ Z.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trên đường tròn lượng giác, cho điểm M(x; y) và sd(OA, OM) = α. Khẳng định nào dưới đây đúng?
A. sin α = y.
B. sin α = x - y.
C. cos α = y.
D. cos α = x + y.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cot(π/6) bằng
0.
√3.
1.
-1.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho tam giác ABC. Khẳng định nào dưới đây đúng?
cos(A+B) = cosC
cos(A+B) = sinC
cos(A+B) = -sinC
cos(A+B) = -cosC
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho góc α thỏa cos α = 4/5, 0 < α < π/2. Giá trị của sin 2α bằng
12/25
24/25
24/25
12/25
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đường cong trong hình bên là đồ thị của hàm số nào dưới đây?
y = tan x.
y = cos x.
y = cot x.
y = sin x.
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