Question

Which angle of rotation is determined by the matrix below?

Answer 1

a rotation matrix ... how are the parts defined by their trig?

Answer 2

of anything, take a point like 0,1 and apply it, what point do you end up with?

Answer 3

i spose 1,0 is more of a positive x axis start ... but its early

Answer 4

0.1 is the point we end up with, right?

Answer 5

no, lets do the matrix math on it

|ab| |1| = |a|
|cd| |0| |c|

Answer 6

in this case, we get something along the lines of (-a,-a)

since all the options are in the postive direction ....