Предмет: Геометрия, автор: urevadiana2

Прошу помощи. Пожалуйста

Приложения:

Ответы

Автор ответа: zmeura1204

0

Ответ:

≈4

Объяснение:

АС=√(АВ²+ВС²-2*АВ*ВС*cos∠B)=

=√(5²+6²-2*5*6*(√2/2))=

=√(25+36-42,4264)=√18,57≈4

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