Теорема косинусов
Authored by Ирина Юдакова
Mathematics
9th Grade
Used 5+ times
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5 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 5 pts
В треугольнике ABC известно, что AB=5, BC=10, AC=11. Найдите cos∠ABC.
Answer explanation
2.
FILL IN THE BLANK QUESTION
1 min • 5 pts
В треугольнике ABC известно, что AB=6, BC=7, AC=8. Найдите cos∠ABC.
Answer explanation
3.
FILL IN THE BLANK QUESTION
1 min • 5 pts
В треугольнике ABC известно, что AB=5, BC=6, AC=4. Найдите cos∠ABC.
Answer explanation
4.
FILL IN THE BLANK QUESTION
1 min • 5 pts
В треугольнике ABC известно, что AB=6, BC=8, AC=4. Найдите cos∠ABC.
Answer explanation
5.
FILL IN THE BLANK QUESTION
1 min • 5 pts
В треугольнике ABC известно, что AB=7, BC=8, AC=13. Найдите cos∠ABC.
Answer explanation
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