Предмет: Геометрия, автор: lkinzyabayeva

ПОМОГИТЕ ПОЖАЛУЙСТА
СРОЧНО!!!! ​

Приложения:
lkinzyabayeva: ОЧЕНЬ СРОЧНО

Ответы

Автор ответа: ZakaZum
1

Ответ:

MN ≈ 11,2 (см)

Объяснение:

Я не вижу полного условия задачи, поэтому буду считать точку которая лежит против MN — A

С теоремы косинусов находим MN

MN²=NA²+MA²-2*NA*MN*cos∠A

MN^{2} =8^{2} +9^{2} -2*8*9 *\frac{\sqrt{3} }{2}

MN²=145-72√3

MN = \sqrt{73\sqrt{3} }

MN ≈ 11,2 (см)

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