Предмет: Геометрия, автор: allagovoroska

4. В ∆ABC ∠A = 45°, ∠B = 30°, BC = 10см. Знайдіть сторону AC.

Ответы

Автор ответа: 3efs

0

Відповідь:

5√2 см

Пояснення:

AC/sinB = BC/sinA

AC = BC * sinB/sinA

AC = 10 * sin30°/sin45° =10*(1/2)/(√2/2) = 5√2 (см).

allagovoroska: спасибо

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