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garabed2 comments on "math overflow.net question No.78294" (16610)http://mathoverflow.tqft.net/discussion/1175/math-overflownet-question-no78294/?Focus=16610#Comment_166102011-10-18T12:11:57-07:002018-11-04T13:49:33-08:00garabed2http://mathoverflow.tqft.net/account/362/
The above question was "How can I calculate the solid angle that a sphere of radius R subtends at a point P?"and was closed for being "too localized". But since I ...
and was closed for being "too localized". But since I can answer it , I could perhaps present the answer here. The desired formula for d>R or d=R is 2*pi*(1-K) where K is the non-negative square root of (1-((R/d)^2)) and d is the distance between the sphere's center and P.]]>