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19.02 10 клас

Authored by Інна Тарковська

Mathematics

10th Grade

12 Questions

Used 1+ times

19.02 10 клас
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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

cos2α=

cos2α+sin2α
cos2α-sin2α
2sinαcosα
1-sin2α

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

sin3αcos4α-cos3αsin4α=

sinα
-sinα
sin7α
-sin7α

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

cos140cos310-sin140sin310=

1

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

sin8y = ?

sin4xcos4х

2sin4xcos4x

2sin4ycos4y

2sinxcos4y

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

cos70° + cos50° =

2cos40°cos10°

2cos10°

cos10°

sin10°

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

0

-1

1

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

1

0

не існує

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