Why is |x(t)| = 1 for x(t) = e^j(2t+π/4)?

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Homework Statement


if
x(t)= ej(2t+pi/4)
then how can |x(t)|=1 ? :(

Homework Equations



Euler formula ? and then half angle or full angle or double angle formula?

The Attempt at a Solution

 

Discussion

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Just Euler's formula is good enough

CLaim: |ejs|=1 for all values s.
 
Thanx for the reply sir
can u elaborate it a bit more?
 
ejs = cos(s)+jsin(s).

Look at what the definition of absolute value is for a complex number
 
ok i got it ... thanks a lot :) GOD bless you :)
lock it please.
 

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