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6 February, 00:23

If sin (3x+2) = cos (4x-10), what is the value of x to the nearest tenth? A. 7.6B. 12.0C. 14.0D. 26.9

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  1. 6 February, 00:53
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    For a complimentary pair of angles i. e a+b=90 degrees, then cos a = sin b

    so;

    3x+2=4x-10

    2+10=4x-3x

    x=12.0
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