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13 April, 17:06

If 2tanx/1-tan^2x=1, then x can equal

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Answers (2)
  1. 13 April, 17:26
    0
    Hello,

    tan 2x=1

    ==>2x = (π/4+kπ) / 2

    ==>x=π/8+kπ/2 (k integer)
  2. 13 April, 17:29
    0
    Tan 2x = 2 tan x / (1-tan^2x)

    hence, tan 2x = 1

    2x = pi

    x = pi/2.
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