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TraditionForm Appears to be Inconsistent


Hi

The Mathematica 7 documentation says that

TraditionalForm[Exp[I \[Theta]] == Cos[\[Theta]] + I Sin[\[Theta]]]

will display the expression in traditional form, and indeed it does.
However, the following evaluates the expression and then displays True
in traditional form:

TraditionalForm[Cos[x] == Sin[x + \[Pi]/2]]

Why is TraditionalForm behaving differently in these two apparently
identical situations, and how can I get Mathematica to display this
trigonometric identity in traditional form?

Thanks in advance

Chris


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