
Повторення властивостей трикутників та тригонометричних функцій
Authored by Дар'я Жуковська
Mathematics
9th Grade
Used 4+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
У трикутнику ABC, сторона a=5, кут A=30∘. Який синус кута A?
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Теорема синусів дозволяє знайти...
кут трикутника
радіус описаного кола
довжину сторони трикутника
усі відповіді правильні
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Яке твердження правильне для теореми косинусів?
c2=a2+b2+2ab⋅cosC
c2=a2+b2−2ab⋅cosА
c2=a2+b2−2ab⋅cosC
c2=a2+b2+2ab⋅cosВ
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
У трикутнику ABC, AB=6, AC=8, ∠BAC=90∘. Яка довжина гіпотенузи BC?
8
10
12
14
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Знайдіть кут у трикутнику, якщо cosA= 0.5.
30∘
45∘
60∘
90∘
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