Rotating array with 20 degree

Dare all,

I have two equations (2 curves) where i need to rotate the coordinate of one of them with an angle of 20 clockwise. I am wondering if there is any way to do that by rotating array matrices with 20 degree and if yes how to do this.

I appreciate your help

Answer 1

[Azzi Abdelmalek]

Look at this example

% -----initial curve---------
x=1:0.01:10;
y=sin(x);
plot(x,y,'r')
hold on
%---------rotated curve-----------------------
ang=20*pi/80 % rotation angle in rad
alpha=angle(x+i*y);
k=abs(x+i*y);
new_alpha=alpha+ang;
new_v=k.*exp(j*(new_alpha));
new_x=real(new_v);
new_y=imag(new_v);
plot(new_x,new_y)

[Abdulaziz]

Thank you Azzi That was very helpful