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Лиз45667
@Лиз45667
July 2022
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Дано: ∆АВС, а = 3√2 см, b = 1 см, С = 45º. Знайдіть сторону с.
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viktoriyakuche
За теоремою косинусів С=√а²+в²-2авсоsC=√(3√2)²+1²-2*3√2*1*cos45=√18+1+6√2*1/√2=√25=5cм
c=5cм
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c=5cм