Trong các công thức sau, công thức nào đúng?

CÔNG THỨC LƯỢNG GIÁC TIẾT 1

Quiz
•
Mathematics
•
11th Grade
•
Hard
Thơm Minh
Used 3+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
sin(a-b)=sina.cosb-cosa.sinb
cos(a-b)=cosa.cosb-sina.sinb
sin(a+b)=sina.cosb+cosa.sinb
cos(a+b)=cosa.cosb+sina.sinb
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Mệnh đề nào sau đây đúng?
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Chọn khẳng định sai trong các khẳng định sau:
4.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
16/65
-18/65
18/65
-16/65
5.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Chọn kết quả đúng?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
sin2a
cos2a
-1/2
1/2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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