Giá trị lượng giác sin315° bằng
BÀI TẬP CÔNG THỨC LƯỢNG GIÁC

Quiz
•
Mathematics
•
12th Grade
•
Medium
Thu Mai
Used 3+ times
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
√3/2
1/2
-√2/2
-√3/2
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Giá trị lượng giác tan240° bằng
√3
1/2
-√3
-√3/2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
√2/2
√2.
(-√2)/2
1/2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Giá trị lượng giác cos315° bằng
1/2
-1/2
√2/2
-√2/2
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Mệnh đề nào sau đây đúng?
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Công thức nào sau đây đúng?
sin(a-b)=sinasinb-cosacosb
sin(a-b)=sinacosb-cosasinb
sin(a-b)=sinacosb+cosasinb
sin(a-b)=cosacosb-sinasinb
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Công thức nào sau đây sai?
sinx/cosx=tanx
cosx/sinx=cotx
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