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30 January, 06:57

The solution of 3tan2x - 1 = 0 if x is in the first quadrant is

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  1. 30 January, 07:06
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    The equation is

    3 tan2x - 1 = 0

    The condition is that x is in the first quadrant or it has a positive angle and is less than 90 degrees.

    Solving the equation

    3 tan2x = 1

    tan2x = 1/3

    2x = tan⁻¹ (1/3)

    x = tan⁻¹ (1/3) / 2

    x = 9.22 degrees
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