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25 July, 14:58

Find all solutions to the equation secx (2 cosx-sqrt 2) = 0

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Answers (2)
  1. 25 July, 15:03
    0
    Hello,

    We suppose x≠+/-π/2.

    2cos x - √2=0

    ==>cos x=√2/2

    ==>x = π/4 or x=3π/4 (modulo 2π)
  2. 25 July, 15:12
    0
    We are given with the equation secx (2 cosx-sqrt 2) = 0
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