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Phil Freedenberg

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Top Questions
19 votes

Is the approximation $\cos\frac23x \approx \frac12(1 + \cos x)$, for $x$ a first-quadrant angle, well known?

trigonometry approximation asked Jul 27 at 21:08
math.stackexchange.com

5 votes

Should black high temperature ABS flow in direct sunlight?

print-quality 3d-design print-material asked Jun 30, 2018 at 14:14
3dprinting.stackexchange.com


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