Предмет: Геометрия, автор: harinykivan

6. Знайдіть сторону трикутника, якщо дві інші сторони утворюють кут 150° і дорів- нюють 3sqrt(3) см і 2 см.

і з 5 по 7
даю 100 балів

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Ответы

Автор ответа: margarita8938

0

Ответ:

√37 см

Объяснение:

За теоремою косинусів с²=а²+в²-2авсоs150°=(3√3)²+1²-2*3√3*1*(-√3/2)=

=27+1-6√3*(-√3/2)=28 + 9 = 37. с=√37 см

harinykivan: тебе не хвилює що там замість 1см 2см

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