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Sep 28, 2024 at 3:40 comment added ubpdqn Thanks. I should I have paid more attention
Sep 27, 2024 at 12:50 comment added cvgmt (+1) Another good idea, but the original question is not about two half circles. I think it should be Clear[expr, r, F]; expr = Simplify[{(Sqrt[3^2 - x^2]/2), (Sqrt[3^2 - x^2]/2), x} /. x -> 3 Sin[t], Assumptions -> 0 <= t <= π/2]; r = RotationMatrix[π/2, {0, 0, 1}]; F[s_, t_] := {1 - s, s} . {expr, r . expr}; ParametricPlot3D[{F[s, t], r . F[s, t]}//Evaluate, {s, 0, 1}, {t, 0, π}]
Sep 27, 2024 at 11:15 history answered ubpdqn CC BY-SA 4.0