Question

Use matrices to rotate the vector v={-4,1}=by 270°. Write the resulting vector in component form.

Answer 1

You know the vector rotation matrix?

Answer 2

I don't :/

Answer 3

\[\left[\begin{matrix}\cos \theta & -\sin \theta \\ \sin \theta & \cos \theta\end{matrix}\right]\]

Answer 4

multiply this by {-4,1} where theta is the angle of rotation

Answer 5

got it?

Answer 6

No not at all, I'm so confused..

Answer 7

@Ready1917 do you know how to multiply 2 matrices?

Answer 8

noo I don't