
Tamnhan mafia
Authored by Nhân Nguyễn
Mathematics
Professional Development

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đổi từ độ sang rad
1°=π\180°
1°=2π\180°
1°=180°\π
1°=180°/2π
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đổi từ rad sang độ
1rad=1/π
1rad=180°\π
1rad=π/180
1rad=π\2
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Công thức hệ thức cơ bản
Sin^2a+cos^2a=1
Sina+sinb=1
Sina-sinb=1
1+tan^2=1/cot^2a(a khác π2+kπ,k€r)
1+tan^2=1/cot^2a(a khác π-kπ,k€r)
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Hệ thức cơ bản
1+cot^2a= 1/sin^a(kπ)
1+cota=1/sina
Tana cota=1(kπ/2)
Tana^2.cota^2=1
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Công thức cộng
Cos(a-b)=cosacosb+sinasinb
Cos(a-b)=Cos^2a.cos^2b+sin^2a.sin^2b
Sin(a-b)=sinacosb-cosasinb
Sin(a-b)= sina cosa-cosbsina
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phep tinh nhan
Tan(a+b)=tana-tanb/1+tanatanb
Tan(a+b)=tana-tanb/1-tanatanb
Tan(a+b)=tana+tanb/1-tanatanb
Tan(a+b)=tana+tanb/1+tanatanb
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Sin 2a=
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