геометрия треугольники
Authored by Екатерина Радионова
Mathematics
12th Grade
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10 questions
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1.
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1 min • 1 pt
В треугольнике ABC AC=BC,AB=14, высота AH равна 77. Найдите синус угла CAB.
2.
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1 min • 1 pt
В треугольнике ABC AC=BC,AB=15, 𝐴𝐻− высота, BH=6. Найдите косинус угла BAC.
3.
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1 min • 1 pt
В треугольнике ABC угол C равен 90∘,AB=10,BC=√19 . Найдите cosA.
4.
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1 min • 1 pt
В треугольнике ABC AC=BC,высота CH равна 16,cos𝐴=0,6. Найдите AC.
5.
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1 min • 1 pt
В треугольнике ABC CD - медиана, угол C травен 90∘, угол B равен 35∘. Найдите угол ACD. Ответ дайте в градусах.
6.
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1 min • 1 pt
Острые углы прямоугольного треугольника равны 53∘ и 37∘. Найдите угол между высотой и медианой, проведенными из вершины прямого угла. Ответ дайте в градусах.
7.
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1 min • 1 pt
Угол при вершине, противолежащей основанию равнобедренного треугольника, равен 30∘. Боковая сторона треугольника равна 11. Найдите площадь этого треугольника.
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