
quiz toán gk 2 11
Quiz
•
Mathematics
•
11th Grade
•
Medium
griffith daniel
Used 1+ times
FREE Resource
49 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 3 pts
Một đường tròn có bán kính 36m . Độ dài của cung trên đường tròn đó có số đo 3pi/4
84,7 m
84,2 m
84,8 m
84,4 m
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho cos a = -0,1 , -pi < a < -pi/2 . Tính cot a
1/ sqrt99
-1/sqrt99
sqrt99
-sqrt99
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Góc có số đo 108' đổi ra rađian là
3pi/5
pi/10
3pi/2
pi/4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các công thức dưới đây công thức nào đúng?
cot -a = cota
cos(pi/2 - a) = sina
tan a+pi = -tana
sin(pi/2 - a) = sina
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rút gọn biểu thức P = sin pi + x - cos(pi/2 - x) + cot 2pi - x + tan (3pi/2 - x) ta được
P = 2sinx
p = -2sinx
P = 0
P = -2cotx
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Với mọi góc lượng giác a,b. Trong các công thức sau, công thức nào đúng
cos (a+b) = cosa.cosb + sina.sinb
sin (a-b) = sina.cosb + cosa.sinb
cos (a-b) = cosa.cosb + sina.sinb
sin (a+b) = sina.cosb - cosa.sinb
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đẳng thức nào sau đây là đúng?
cos2a = cos2a sin2a
cos2a = cos2a + sin2a
cos2a = 2cos2a + 1
cos2a= 2sin2a - 1
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