1.
Let ZZ and WW be complex numbers such that Z=W|Z| = |W|, and argZ\arg Z denotes the principal argument of ZZ.
Statement 1: If argZ+argW=π\arg Z + \arg W = \pi, then Z=WˉZ = -\bar{W}.
Statement 2: Z=W|Z| = |W|, implies argZargW=π\arg Z - \arg W = \pi.