For a sphere, the relation between steradians and the area they cover is O = A/(r^2), in which O is the measure of the solid angle, A is the area it covers, and r is the radius. If I were instead given the half-angle of the steradian...meaning that if there was a central axis running through the solid angle, connecting the surface of the sphere to its center, the half-angle would simply be the angle between the central axis and the edge of the solid angle....then how would I find the area covered by the solid angle in respect to the half angle.(adsbygoogle = window.adsbygoogle || []).push({});

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# Homework Help: Area of portion of sphere

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