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Тригонометрия

Authored by Юлия Левина

Mathematics

12th Grade

Used 11+ times

Тригонометрия
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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Верно или нет

 sin750°=32\sin750\degree=\frac{\sqrt{3}}{2}  

 ++  

 -  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Верно или нет,что угол  390°390\degree  - это угол  ІІ  четверти

 ++  

 -  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Верно или нет
tg  (110°)>0\left(-110\degree\right)>0  

 ++  

 -  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Верно или нет
 2sin π6+2cos π3=22\sin\ \frac{\pi}{6}+2\cos\ \frac{\pi}{3}=2  

 ++  

 -  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Известно, что  sinα и cosα\sin\alpha\ и\ \cos\alpha  отрицательные.

 Может ли  угол  α\alpha  быть углом IV четверти?

 ++  

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