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16 February, 23:24

The value pi/12 is a solution for the equation 2cos^2 (4x) - 1=0

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Answers (2)
  1. 17 February, 02:55
    0
    The answer is true beacuse 2cos^2 (π/4) - 1 = 2 (√2/2) ^2-1 = 2 (1/2) - 1 = 1-1 = 0
  2. 17 February, 02:55
    0
    This is a true statement.
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