Предмет: Алгебра, автор: mashkaslinchuk

упростите выражение 1-sin^2(X)+ctg^2(X)*sin^2(X)

Ответы

Автор ответа: natali15medved

7

1-Sin^2x+Ctg^2xSin^2x=Cos^2x+Cos^2x*Sin^2x/Sin^2x=2 Cos^2x

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