
Теорема костнусів

Quiz
•
Mathematics
•
9th Grade
•
Hard
Олена Снігурова
Used 3+ times
FREE Resource
8 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
1 min • 5 pts
Запишіть продовження теореми.
Теорема косинусів: квадрат сторони трикутника дорівнює сумі квадратів двох інших його сторін без подвоєного добутку цих сторін на ...
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Якщо a2+b2>c2, тоді
трикутник гострокутний
Трикутник тупокутний
Трикутник прямокутний
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Якщо a2+b2<c2, тоді
Трикутник гострокутний
Трикутник прямокутний
Трикутник тупокутний
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
sin(90-a)=
sin a
cos a
- sin a
- cos a
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
cos(180-a)=
sin a
cos a
- sin a
- cos a
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
sin2a + cos2a =
0
1
2
sin a
cos a
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
cos 150 =
8.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
sin 120 =
1
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