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Prove that (sin 3theta-sintheta)/(cost...

Prove that
`(sin 3theta-sintheta)/(costheta-cos3 theta)=cot2 theta`

Answer

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Knowledge Check

  • (sin5theta+sin2theta-sintheta)/(cos5theta+2cos3theta+2cos^2theta+costheta) is equal to

    A
    `tantheta`
    B
    `costheta`
    C
    `cottheta`
    D
    none of these
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