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17 February, 18:13

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

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Answers (2)
  1. 17 February, 18:33
    0
    Tan 2x = 2 tan x / (1-tan^2x)

    hence, tan 2x = 1

    2x = pi

    x = pi/2.
  2. 17 February, 19:17
    0
    Hello,

    tan 2x=1

    ==>2x = (π/4+kπ) / 2

    ==>x=π/8+kπ/2 (k integer)
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