
Kiểm tra kiến thức lượng giác

Quiz
•
Mathematics
•
11th Grade
•
Hard
Bình Đào
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giải phương trình lượng giác sin(x) = 0.5.
x = π/6 + 2kπ, x = 5π/6 + 2kπ, k ∈ Z
x = 7π/6 + 2kπ
x = π/4 + 2kπ
x = 3π/4 + 2kπ
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sử dụng định lý sin để tính cạnh a trong tam giác ABC với A = 30°, B = 45°, c = 10.
4.75
7.10
5.18
6.32
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính giá trị của cos(60°).
0.25
1
-0.5
0.5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giải phương trình lượng giác cos(2x) = 0.5.
x = nπ ± π/6, n ∈ Z
x = nπ + π/4, n ∈ Z
x = nπ + π/2, n ∈ Z
x = nπ - π/3, n ∈ Z
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sử dụng định lý sin để tìm góc C trong tam giác ABC với a = 7, b = 10, A = 30°.
C = 90.6°
C = 75°
C = 60°
C = 45°
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính giá trị của tan(45°).
0
1
-1
1.5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giải phương trình lượng giác sin(x) + sin(2x) = 0.
x = (2k+1)π/4
x = nπ, x = (2k+1)π/3, where n, k are integers.
x = nπ/2
x = kπ/6
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