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Prove the following:(frac(sinx-sin3x+sin...

Prove the following:`(frac(sinx-sin3x+sin5x-sin7x)(cosx-cos3x-cos5x+cos7x))=cot2x`

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Knowledge Check

  • 2cosx-cos3x-cos5x=

    A
    `16cos^3 xsin^2 x`
    B
    `16sin^3 cos^2 x`
    C
    `4cos^3 xsin^2 x`
    D
    `4sin^3 x cos^2 x`

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