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How to find Centroid for a rectangular section inclined at an angle theta? Is there any general formula available?

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    The centroid is independent of rotations.2012-07-05

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The location of the centroid of a body doesn't change with rotation . If you are working in a coordinate system, then only the coordinates of the centroid change (not with respect to the body but with respect to axes). Thus,in a rectangle centroid $(x,y)$ is intersection of two diagonals and if the rectangle is rotated by $\theta$ then new coordinates$(x',y')$ are given by system of equations $x'=x\cos\theta-y\sin\theta$ and $y'=x\sin\theta+y\cos\theta$

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    Thank you Avatar.It's useful.2012-07-05