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geerky42 Group Title

How to find the exact value of \(\cos\left(\dfrac{\pi}{7}\right)\)?

  • one year ago
  • one year ago

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  1. RadEn Group Title
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    pi/7 ?

    • one year ago
  2. geerky42 Group Title
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    Yes.

    • one year ago
  3. geerky42 Group Title
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    Is it possible to find the exactly value algebraically?

    • one year ago
  4. starbot Group Title
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    yes it is possible but I'm not quite sure how

    • one year ago
  5. Ephilo Group Title
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    try using the half angle formula

    • one year ago
  6. geerky42 Group Title
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    @Ephilo How?

    • one year ago
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