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10 September, 12:10

Solve tan2A - 2tanA = - 1

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  1. 10 September, 12:29
    0
    Ill assume it is : -

    tan^2 A - 2 tan A + 1 = 0

    (tan A - 1) ^2 = 0

    tan A = 1

    m < A = 45, 225 degrees (where 0 < m A < 360)
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