# Moment of inertia

Find the moment of inertia of a solid disc of mass $$M$$ and radius $$R$$ about an axis which passes through the center and makes an angle of $$30 ^\circ$$ with the plane of disc as shown in figure.

If the answer is of form $$\dfrac{a}{b}MR^{2}$$, find $$a + b$$. where a,b are coprime

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