Quote:
Originally Posted by mr fantastic  You're expected to be familiar with the various standard transformation matrices, including the one for rotation in an anti-clockwise direction by an angle  .
So I suggest you look up the rotation matrix in your notes or textbook and then determine the angle that gives this particular matrix. |
We haven't taken notes on this, nor do we have a textbook. (We use Exeter, which is a bunch of random problems thrown together and bound.)