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18 December, 05:34

Solve tan (3x) = 1 if - pi≤x≤pi.

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  1. 18 December, 09:12
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    Tan (3x) = 1

    3x = arctan (1) = pi/4, - 3pi/4

    x = (pi/4) / 3 = pi/12 or (-3pi/4) / 3 = - pi/4

    Therefore, x = pi/12 or - pi/4
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