I need help on this problem-

Consider the complex numbers v, w and z in the complex plane below:

[asy]
size(250);
import TrigMacros;

real big = 4;

for (int i = 1; i < big+1; ++i)
{
draw(Circle((0,0),i), lightblue + linewidth(0.4));
}

for(int i=0;i<360;i+=15) {
draw(rotate(i)*((-big,0)--(big,0)), lightblue + linewidth(0.4));
}

rr_cartesian_axes(-big,big,-big,big,complexplane=true);

pair O, V, Z, WW;

O = (0,0);
WW= 2*dir(135);
V = dir(15);
Z = 2*dir(195);

dot("$v$", V, E);
dot("$w$", WW, N);
dot("$z$", Z, S);
[/asy]
Enter the magnitudes: |v|, |w|, |z|
in that order.

 

part b: Using the same complex plane provided, find the magnitudes: |v+w|, |w+z|, |z+v| in that order

Thanks!