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Simplify


Hi folks,

Simplify must result:

Simplify[(1 + Sin[x] - Cos[x])/(1 + Sin[x] + Cos[x]) == Tan[x/2]]
True

but why instead it results:

Simplify[(1 + Sin[x] - Cos[x]) / (1 + Sin[x] + Cox[x]) ==  Tan[x/2]]

((Cos[x] - Cox[x])*Tan[x/2]) / (1 + Cox[x] + Sin[x]) == 0

Thanks.

Max.



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