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30 June, 18:02

Prove sin (3pi-x) = sin x

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  1. 30 June, 21:10
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    Sin (3pi-x) = sinx

    divide by sin

    3pi-x=x

    2x=3pi

    x = 3/2 pi

    Sub x into equation:

    sin (3pi - (3/2) pi) = sin (3/2pi)

    3pi - (3/2) pi=3/2pi

    3pi = (3/2) pi + (3/2) pi

    3pi=3pi
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