Use a calculator to evaluate cot 3.14/5

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13-03-2018
Mathematics

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Use a calculator to evaluate cot 3.14/5

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sqdancefan sqdancefan · Answer 1 · 2018-03-14T02:27:07+01:00

sqdancefan sqdancefan

14-03-2018

You need to be a little careful here. cot(3.14/5) ≠ cot(π/5) to the accuracy shown. 3.14 is not a useful approximation for π if you want to use more than 3 significant digits in your result.

The 2nd selection is appropriate. (1.376)

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