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2 November, 11:29

Simplify sin (3x+13) = cos (4x)

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  1. 2 November, 14:20
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    Sin (3*+13) = sin (pi/2-4*)

    3x+13 = pi/2 - 4 * or 3*+13 = pi-pi/2 + 4*

    7 * = pi/2 - 13 + k2pi or - * = pi/2 + k2pi

    * = pi/14 - 13/7 k2pi/7 or X = - pi/2 + kpi
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