Prove that the spheres x2 + y2 + z2 = 16 and x2+ (y+5)2 + z2 =9 intersect orthogonally.
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Prove that the spheres x2 + y2 + z2 = 16 and x2+ (y+5)2 + z2 =9 intersect orthogonally.
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It is proven that two spheres intersect orthogonally. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.
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find the point(s) of intersection:
the first equation implies x^2 + z^2 = 16 - y^2
and the second is x^2 + z^2 = 9 - (y -5)^2
so 16 - y^2 = 9 - (y - 5)^2 gives
16 - y^2 = 9 - y^2 + 10y - 25 ...
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