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21 November, 07:20

Sin 2x-4 Sinx - Cosx + 2 = 0

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  1. 21 November, 09:34
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    (2sinx-1) (cosx-2)

    Step-by-step explanation:

    sin 2x=2sinxcosx

    2sinxcosx-4sinx-cosx+2=

    2sinxcosx-cosx+2-4sinx=

    cosx (2sinx-1) + 2-4sinx=

    cosx (2sinx-1) + 2 (1-2sinx) =

    cosx (2sinx-1) - 2 (2sinx-1) =

    (2sinx-1) (cosx-2)
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