Pre Calc

Solve 2 sin^2 x-3 sin x+1 =0, 0 less than or equal to x < 2pi

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  1. 2 z^2 - 3 z + 1 = 0

    (2z-1)(z-1) = 0

    z = 1/2 or z = 1

    so when is sin x = 1/2 ?
    and when is sin x = 1 ?

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