Предмет: Математика, автор: zengamer777

Упроситите пример. #24.144 (1)

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Ответы

Автор ответа: Аноним
0

(2/2)(sinα/4*cosα/4)*cosα/2=(sinα/2*cosα/2)/2=(2sinα/2*cosα/2)/4

sinα/4=0.25sinα

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