Working with array elements and structure

Hi, I am learning to use matlab, and have these simplified code;

K=12;
N=2;
phi_st=0;
delta_phi=30;

i=1:K;
phi(i)=phi_st+(i*delta_phi);
j=1:N;
phi_p=180;

phi_P=(phi_p)*(j-1);

Now my question is how do I compute

phi_1=phi(i)+phi_P;

The error am getting is "Error using + Matrix dimensions must agree."

Please assist me.thanks

Answer 1

[Azzi Abdelmalek]

replace k by K in

phi_P=(phi_p).*(k-1);

[Lucy]

So sorry.i made a mistake.its j, not k.thanks

[Azzi Abdelmalek]

Check the sizes of phi(i) and phi_P, they are different