
Câu hỏi trắc nghiệm Lượng Giác
Quiz
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
Thanh Thanh
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34 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đẳng thức đúng là:
sin^2 x + cos^2 x = 1
sin^2 x − cos^2 x = 1
tan^2 x + 1 = csc^2 x
1 + cot^2 x = sec^2 x
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức đúng của cos 2x là:
1 − 2 sin^2 x
2 sin^2 x − 1
2 cos^2 x + 1
1 + 2 sin^2 x
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tan(α+β) bằng:
(tanα + tanβ)/(1 − tanα tanβ)
(tanα + tanβ)/(1 + tanα tanβ)
(tanα − tanβ)/(1 − tanα tanβ)
(tanα − tanβ)/(1 + tanα tanβ)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin(π/2 − x) bằng:
cos x
sin x
−cos x
−sin x
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giá trị sin 30° là:
1/2
√3/2
√2/2
0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giá trị tan 45° là:
1
√3
1/√3
0
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
π rad bằng bao nhiêu độ?
180°
90°
360°
120°
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