Rotating one vector about another

Write a function named getRotatedPoint which receives two vectors and one scalar as input. The two vectors represent the x-y coordinates of two points and the scalar represents a rotation angle. The function must return the x-y coordinates of the first point after it is rotated around the second point by the rotation angle (in degrees) passed to the function.

[Steven Lord]

This sounds like a homework assignment. If it is, show us the code you've written to try to solve the problem and ask a specific question about where you're having difficulty and we may be able to provide some guidance.

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If you aren't sure where to start because you're not familiar with the mathematics you'll need to solve the problem, I recommend asking your professor and/or teaching assistant for help.

Answer 1

[David Hill]

function P = getRotatedPoint(A,B,r)
C=A-B;
p=norm(C);
if C(1)<0
    c=atand(C(2)/C(1))+180+r;
else
    c=atand(C(2)/C(1))+r;
end
P=[p*cosd(c),p*sind(c)]+B;
end