求化简(sinx+tanx)/cos^2x+sin^2x+cosx

发布时间:2021-03-16 08:38:46

求化简(sinx+tanx)/cos^2x+sin^2x+cosx

网友回答

(sinx+tanx)/(cos^2x+sin^2x+cosx)
=(sinx+sinx/cosx)/(1+cosx)
=sinx(cosx+1)/[cosx(1+cosx)]
=sinx/cosx
=tanx
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