Cho mình hỏi có phải hàm cosx sinx đều chẵn và lẻ với mọi x đúng k ạ , còn tanx vad cotx thì sao ạ

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Các hàm y=sinx, y=tanx và y=cotx là hàm số lẻ chỉ có hàm y=cosx là hàm số chẵn

Đáp án: sinx, tanx, và cotx là hàm lẻ

Cosx ms là hàm chẵn

Lời giải:

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