Công thức toán
Authored by Phan Nguyen
Mathematics
11th Grade
Used 6+ times
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36 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cos(a-b) = ?
cosa.cosb+sina.sinb
cosa.cosb-sina.sinb
sina.cosb-cosa.sinb
sina.cosb+cosa.sinb
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cos(a + b)=?
cosa.cosb-sina.sinb
cosa.cosb+sina.sinb
sina.cosb+sinb.cosa
sina.cosb-sinb.cosa
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin(a-b)=?
sina.cosb - cosa.sinb
cos(a - b)
cos(a)cos(b) + sin(a)sin(b)
sin(a) + sin(b)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tan(a+b)=?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tan(a-b)=?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin2a=?
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
cos2a=?
sin²(a) + cos²(a)
3cos²(a) - 2c
1 - 2sin²a
cos²a - sin²a
2cos²a-1
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