[填空题]
Points A and B represh;tut+ de39 rwlcg1p6ent theg ta+* hi+wx-gcxy,14ew ;bso complex numbers $z_1$ = 3 −i and $z_2$=-3-3i as shown on an Argand diagram below.
1.Find the angle AOB=$\frac{x\pi}{y}$ ; x= ,y= .
2.Find the argument of $z_1$$z_2$
arg$z_1$$z_2$=-$frac{x\pi}{y}$ ; x= ,y= .
3.Given that the real powers of p$z_1$$z_2$ , for p>0, all lie on a unit circle centred at the origin, find the exact value of p.
p=$\frac{\sqrt{x}}{y}$ ; x= ,y= .
