(1+sinx-cosx)/(1+sinx+cosx)化简过程,

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(1+sinx-cosx)/(1+sinx+cosx)化简过程,
(1+sinx-cosx)/(1+sinx+cosx)化简过程,

(1+sinx-cosx)/(1+sinx+cosx)化简过程,
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(1+sinx-cosx)/(1+sinx+cosx)
= [(1-cosx)+sinx]/[(1+cosx)+sinx]
= {2*[sin(x/2)]^2+2sin(x/2)cos(x/2)}/{2*[cos(x/2)]^2+2sin(x/2)cos(x/2)}
= sin(x/2)/cos(x/2)
= tan(x/2)