Fig. 3

NGC 3941 inclination angle offset versus c3-amplitude. The horizontal line describes the c3(bestfit) + Δc3(bestfit), where Δc3 is the 1σ uncertainty of the c3-term. Since the minimum occurs at the best-fitting inclination angle, and any offset from the best-fitting inclination gives rise to a c3 amplitude, the inclination can be confidently constrained.
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