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Find the value of x for which f(x)=sqrt(...

Find the value of `x` for which `f(x)=sqrt(sinx-cosx)` is defined, `x in [0,2pi)dot`

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`f(x)=sqrt(sinx-cosx) " is defined if " sinxgecosx`.

From the graph, `sinxge cosx,for x in [pi/4,(5pi)/4]`.
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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS -SINGLE CORRECT ANSWER TYPE
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