‫Welcome back.
‫So here are the answers for the rotation's about the Z, Y and X axis, respectively, as you can see,
‫due to the fact that the rotation matrices are also normal matrices, when you need to find their inverses,
‫it's very easy.
‫You just take their transpose.
‫So that's a very good fact to know because it will simplify your life.
‫Now, what we have done, we have derived the three rotation matrices that rotate the body frame with
‫respect to the inertia frame, about one specific axis, either about the Y or X.
‫However, as we saw before, we need to rotate about more than one access to reach a certain altitude.
‫And so in the next video, we will discuss how to merge these different rotations to achieve a desired
‫altitude.
‫Thank you very much.
‫And I see you in the next video.