В треугольнике авс длина стороны ав равна 6 см, угол в =95 градусов угол а = 55 градусов .вычислите длины сторон вс и ас

Смирнов Алексей Владимирович

Учитель математики высшей категории

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Длины сторон треугольника составляют BC \approx 9.83 см и AC \approx 11.95 см. ️ Шаг 1: Нахождение третьего угла треугольника Сумма углов любого треугольника равна 180180 raised to the composed with power. Зная углы A=55angle cap A equals 55 raised to the composed with power и B=95angle cap B equals 95 raised to the composed with power, вычислим угол Cangle cap C: C=180(A+B)=180(55+95)=30angle cap C equals 180 raised to the composed with power minus open paren angle cap A plus angle cap B close paren equals 180 raised to the composed with power minus open paren 55 raised to the composed with power plus 95 raised to the composed with power close paren equals 30 raised to the composed with power️ Шаг 2: Применение теоремы синусов для стороны BC Согласно теореме синусов, отношения сторон к синусам противолежащих углов равны: ABsinC=BCsinAthe fraction with numerator cap A cap B and denominator sine cap C end-fraction equals the fraction with numerator cap B cap C and denominator sine cap A end-fraction Выразим и вычислим сторону BCcap B cap C: BC=ABsinAsinC=6sin55sin30cap B cap C equals the fraction with numerator cap A cap B center dot sine cap A and denominator sine cap C end-fraction equals the fraction with numerator 6 center dot sine 55 raised to the composed with power and denominator sine 30 raised to the composed with power end-fraction Используя значения sin550.8192sine 55 raised to the composed with power is approximately equal to 0.8192 и sin30=0.5sine 30 raised to the composed with power equals 0.5: BC=60.81920.5=120.81929.8304cap B cap C equals the fraction with numerator 6 center dot 0.8192 and denominator 0.5 end-fraction equals 12 center dot 0.8192 is approximately equal to 9.8304 ️ Шаг 3: Применение теоремы синусов для стороны AC Аналогично найдем сторону ACcap A cap C, используя угол Bangle cap B: ABsinC=ACsinBthe fraction with numerator cap A cap B and denominator sine cap C end-fraction equals the fraction with numerator cap A cap C and denominator sine cap B end-fraction AC=ABsinBsinC=6sin95sin30cap A cap C equals the fraction with numerator cap A cap B center dot sine cap B and denominator sine cap C end-fraction equals the fraction with numerator 6 center dot sine 95 raised to the composed with power and denominator sine 30 raised to the composed with power end-fraction Учитывая, что sin95=sin850.9962sine 95 raised to the composed with power equals sine 85 raised to the composed with power is approximately equal to 0.9962: AC=60.99620.5=120.996211.9544cap A cap C equals the fraction with numerator 6 center dot 0.9962 and denominator 0.5 end-fraction equals 12 center dot 0.9962 is approximately equal to 11.9544 Ответ: Сторона BC \approx 9.83 см, сторона AC \approx 11.95 см. Укажите, требуется ли вам округление до целых чисел или сохранение ответа через тригонометрические функции?

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