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How to prove : tan(pi /12) = 1| / |4 + 1| / |-4 + 1| / |4 + ... + 1| / |-... + 1| / |... ?

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lvl107
20-Turquoise
20-Turquoise
‎Jul 28, 2018 08:50 AM
‎Jul 28, 2018 08:50 AM

How to prove : tan(pi /12) = 1| / |4 + 1| / |-4 + 1| / |4 + ... + 1| / |-... + 1| / |... ?

  Hello, Everyone.

  From :

 

  Thanks in advance.

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ttokoro
21-Topaz I
21-Topaz I
(To:lvl107)
‎Jul 28, 2018 08:05 PM
‎Jul 28, 2018 08:05 PM

How about this?

ans-1.gif

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ttokoro
21-Topaz I
21-Topaz I
(To:lvl107)
‎Jul 28, 2018 08:05 PM
‎Jul 28, 2018 08:05 PM

How about this?

ans-1.gif

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lvl107
20-Turquoise
20-Turquoise
(To:ttokoro)
‎Jul 29, 2018 11:24 AM
‎Jul 29, 2018 11:24 AM

Many thanks for your time and help, ttokoro. Smiley Happy

    Regards.

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