What would be the Direction Cosine Matrix if there was a rotation about q for 120 degrees. I know that q would be lambda and theta = 120 degrees. But we don't have any measure numbers for lambda, so I can't create a DCM using Principle Rotation Parameters. Would you do it using the Euler Angles method? If so, how?

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Engineering Drawing

Technical drawing has been around since ancient times. As in the ancient Renaissance, complicated drawings were created, including Leonardo da Vinci's drawing. Modern engineering drawing, including its specific orthographic projection with scale conventions, began in Europe (France) during the early stages of Industrialization. L.T. C. Rolt also made some of Marc's drawings for its block-making machinery (in 1799) that also may have contributed significantly to British engineering technology. Since he learned the art of presenting three-dimensional(3D) items in a two-dimensional(2D) plane, as we now term mechanical drawing.