Предмет: Геометрия, автор: verakornijcuk58

2
$2 \times cos60 + \sqrt{3 \: } cos30$

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Автор ответа: OblivionFire

0

Значение cos60° и cos30° вычисляем по таблице тригонометрических функций. Она позволяет нам перевести значения популярных углов из градусов в радианы. Решение: 2·cos60°+√3·cos30°=2·½+√3·√3/2=1+√9/2=1+3/2=(2+3)/2=5/2=2½=2,5. Ответ: 2,5. Таблица прилагается.

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