Автор - daiana57

ctg2(2п-а)-sin(a-2п)cos1=sin2a​

Ответ

Автор - Mishka0078

Ctg4n-ctg2a-sina-sin2n×cos1=sin2a

Ctg2n-a-a-2n×cos1=sin2a

Ctg×cos1=sin2a

Ответы и объяснения

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