Công thức lượng giác 11A1
Authored by Trà Hương
Mathematics
11th Grade
Used 2+ times
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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cos (a - b) = ....
cosa.cosb + sina.sinb
cosa.cosb + cosa.sinb
sina.sinb + sina.sinb
cosa.sinb + sina.sinb
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cos (a +b) = .....
cosa.cosb + sina.sinb
cosa.cosb - sina.sinb
sina.sinb - cosa.cosb
cosa.cosb - sina.cosb
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin (a + b) =....
cosa.cosb + cosa.sinb
sina.cosa + cosb.sinb
sina.cosb - cosa.sinb
sina.cosb + cosa.sinb
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tan (a + b) =....
(tan a + tan b)/(1 - tana.tanb)
(tan a - tan b)/(1 - tana.tanb)
(tan a + tan b)/(1 + tana.tanb)
(tan a - tan b)/(1 + tana.tanb)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin2a =
sina.cosa
4 sina.cosa
2.sina.cosa
sina2.cosa2
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
cos2a
1 - 2sin2a = cos2a - sin2a = 2cos 2 - 1
1 - 2sin2a = cos2a + sin2a = 2cos 2 - 1
1 - 2sin2a = cos2a - sin2a = 2cos 2 + 1
1 + 2sin2a = cos2a - sin2a = 2cos 2 - 1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tan 2a =......
2.tana/ ( 1- tan2a)
tana/ ( 1- tan2a)
2.tana/ ( 1+ tan2a)
tana/ ( 1+ tan2a)
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