If Z= -1+i be a complex number .Then Arg(Z) is equal to

If Z =−1 + і be a complex number .Then Arg(Z) is equal to

If z ne 0 be a complex number and "arg"(z)=pi//4 , then

Let z be any non-zero complex number. Then pr. arg(z) + pr.arg (barz) is equal to

The conjugate of a complex number z is (2)/(1-i) . Then Re(z) equals

If z be any complex number (z!=0) then arg((z-i)/(z+i))=(pi)/(2) represents the curve

Let z be a complex number and i=sqrt(-1) then the number of common points which satisfy arg(z-1-i)=(pi)/(6) and arg((z-1-i)/(z+1-i))=(pi)/(2) is