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Теорема косинусов

Authored by Ирина Юдакова

Mathematics

9th Grade

Used 5+ times

Теорема косинусов
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5 questions

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1.

FILL IN THE BLANKS QUESTION

1 min • 5 pts

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В треугольнике ABC известно, что AB=5, BC=10, AC=11. Найдите cos∠ABC.

(a)  

Answer explanation

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2.

FILL IN THE BLANKS QUESTION

1 min • 5 pts

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В треугольнике ABC известно, что AB=6, BC=7, AC=8. Найдите cos∠ABC.

(a)  

Answer explanation

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3.

FILL IN THE BLANKS QUESTION

1 min • 5 pts

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В треугольнике ABC известно, что AB=5, BC=6, AC=4. Найдите cos∠ABC.

(a)  

Answer explanation

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4.

FILL IN THE BLANKS QUESTION

1 min • 5 pts

Media Image

В треугольнике ABC известно, что AB=6, BC=8, AC=4. Найдите cos∠ABC.

(a)  

Answer explanation

Media Image

5.

FILL IN THE BLANKS QUESTION

1 min • 5 pts

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В треугольнике ABC известно, что AB=7, BC=8, AC=13. Найдите cos∠ABC.

(a)  

Answer explanation

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