Автор - dashagricenko16

sin2acos4a(1+cos2a)/(sin3a+sina)(cos3a+cos5a)

Ответ

Автор - horrrible
Продолжение к фото:
=cos4a * 2cos(a^2) * cos4a = 2cos (4a)^2 * cos (a^2)

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