Rotate Point in Matlab Plotting

[eltrinco]

Homework Statement

i need to fix a point and rotate another one

Homework Equations

The Attempt at a Solution

i did this

i've created this:

x=rand(1,3)
y=rand(1,3)
scatter(x,y)

how do i select and make one point fix and make the other point rotate around it?

 

[Simon Bridge]

You use a "rotation matrix" or the built-in rotation function.
http://www.mathworks.com/help/matlab/ref/rotate.html
... you should be able to look these things up yourself though.