
Câu hỏi Toán Học
Authored by hien nguyen
Mathematics
11th Grade

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63 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
135o
72o
270o
240o
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
l = 5 .
l = 5π .
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin a > 0 , cos a > 0 .
sin a < 0 , cos a < 0 .
sin a > 0 , cos a < 0 .
sin a < 0 , cos a > 0 .
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các đẳng thức sau, đẳng thức nào đúng?
sin (180o - a) = - cos a .
sin(180o - a) = -sin a .
sin(180o - a) = sin a .
sin (180o - a) = cos a .
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chọn đẳng thức sai trong các đẳng thức sau
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các mệnh đề sau, mệnh đề nào đúng?
cos(-x) = - cos x .
sin ( x - π ) = sin x .
cos(π - x) = - cos x .
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giá trị của tan180° là
1.
0 .
-1.
1, 34 .
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