title: Rotation about the Y-Axis
body: <p>Doing a couple rotations in Matlab, one which is rotation about the y-axis, however online I've found two different answers: <a href="http://www.euclideanspace.com/maths/algebra/matrix/orthogonal/rotation/index.htm" rel="nofollow noreferrer">here</a> and <a href="http://www.siggraph.org/education/materials/HyperGraph/modeling/mod_tran/3drota.htm" rel="nofollow noreferrer">here</a>. Which is correct, if both how does one get to the other?</p>