cosx-sinx/cosx+sinx的化简

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cosx-sinx/cosx+sinx的化简cosx-sinx/cosx+sinx的化简cosx-sinx/cosx+sinx的化简上下除以-cosxsinx/cosx=tanx原式=-(tanx-1

cosx-sinx/cosx+sinx的化简
cosx-sinx/cosx+sinx的化简

cosx-sinx/cosx+sinx的化简
上下除以-cosx
sinx/cosx=tanx
原式=-(tanx-1)/(tanx+1)
=-(tanx-tanπ/4)/(1+tanxtanπ/4)
=-tan(x-π/4)
=tan(π/4-x)