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19 August, 20:26

What is the exact value of cos 4/3 pi

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Answers (2)
  1. 19 August, 21:46
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    The exact value of cos (43) cos 43 cannot be found using sum and difference formulas or half-angle identities. The approximate decimal answer is 0.235237570.23523757.
  2. 19 August, 23:19
    0
    Cos 4/3π = cos (π + π/3) = - cos π/3 = - 0.5
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