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Answers and rating deltas for
C# Math.Acos How prevent NaN
| Author | Votes | Δ |
|---|---|---|
| Smi | 6 | +4.35 |
| John Feminella | 5 | +0.91 |
| Anders Tornblad | 3 | +0.61 |
| Serge Wautier | 2 | -0.18 |
| Oded | 2 | -0.93 |
| Nic Foster | 1 | -2.58 |
| Oleksandr Pshenychnyy | 1 | -2.36 |
| Goujosamma | 0 | 0.00 |
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