What is the argument of the complex numb...

What is the argument of the complex number `(-1-i)` where `i=sqrt(-1)`?

Verified by Experts

`Z=-1-hati`
`-x<=avg(Z)<=pi`
`tan(pi/4)=1`
From diagram `avg(Z)=x+pi/4`
`avg(Z)=-3/4pi`.

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