đề 9
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đề 9
Quiz
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
linh nguyen
FREE Resource
Enhance your content in a minute
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Với 3 tia Ou, Ov, Ow bất kì, ta có:
sđ (Ou, Ov) + sđ (Ov, Ow) = _____(k ∈ Z)
sđ (Ou, Ow) + k360°
sđ (Ou, Ow) + k180°
sđ (Ov, Ow) + k360°
sđ (Ou, Ow) + k180°
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin2a = 2sina. cosa
2cosa
sina. cosa
2sina. cosa
1 - cos2a
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Biến cố độc lập
Việc xảy ra hay không xảy ra của biến cố A (B) ảnh hưởng đến biến cố B (A)
Biến cố: “A và B xảy ra”
Biến cố: “A hoặc B xảy ra”
Việc xảy ra hay không xảy ra của biến cố A (B) không ảnh hưởng đến biến cố B (A)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đúng
Sai
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