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Math Help - sinc

  1. #1
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    sinc

    given sinc(x) = sin(x)/x

    show that sinc(x) = cos(x/2)sinc(x/2)

    please help
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  2. #2
    Junior Member
    Joined
    Jan 2011
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    reply

    hello dear
    use the identity sinx=2sin(x/2)cos(x/2)
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  3. #3
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    Oct 2010
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    thank you that makes it so much understandable. i was looking for an identity to bring in cos i got stuck trying to use cos(x-pi/2) but knew that was overcomplicating thing

    i dont know why i didnt know that identity but thats all i really needd to figure it out thanks
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