`z = r(Costheta + i Sintheta) = r e^(itheta), bar z = r(Costheta - i Sintheta) = r e^(-itheta)` find `(z/bar z + bar z/z)`

If z=r(cos theta +i sin theta ), then the value of (z/ bar z + bar z /z)

Select the correct answer from the given alternatives. If z = r (Costheta + i Sintheta) then the value of (z /bar z) +(bar z / z) is …… .

If z = re^(itheta) , then abs(e^(iz)) =

If z = r(costheta+isintheta) , then the value of frac{z}{barz}+frac{barz}{z} is

If arg(z) = theta , then arg(bar z) =

If abs(z+1) = z+2 (1+i), then find z

If arg(z)= theta , then arg( bar z ) = ?

Let z=costheta +i sintheta . Then, the value of sum_(m=1)^15Imz^(2m-1) at theta = 2^@ is

Select the correct answer from the given alternatives. If z = r ( cos theta + isin theta), then the value of (z)/(barz)

For z=2+3i, verify the following: bar bar z = z