Предмет: Математика, автор: ajzecclark777

Помогите решить 1-sin^2альфа.

Alice7Welcome: У Вас допущена ошибка. Это не уравнение. Что нужно делать?

parus77: а никто и не говорит,что это уравнение.Нужно упростить.

Alice7Welcome: Это кто сказал, Вы? В задании я этого не вижу, так что перестаньте гадать на кофейной гуще.

Ответы

Автор ответа: parus77

1-sin²α=sin²α+cos²α-sin²α=cos²α
применили основное тригонометрическое тождество sin²α+cos²α=1

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