Let f(x) = sin(x) + icos(x). Show that |f(x)| = 1.
I'm not even sure where to start here...

Let f(x) = sin(x) + icos(x). Show that |f(x)| = 1.
I'm not even sure where to start here...

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hey its too much easy... |f(x)|=sqrt((1)^2+(1)^2)=sqrt(2)

The question is right. I know DeMoivres, but in this case it's sin(x) + icos(x).

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