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March 26, 2017

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If S=1/2^2cos1 + 1/cos1¤cos2+1/2^3 cos1 ¤cos2¤cos2^2 + .......... upto 10 terms . If S= sina(cotb-cotc) where a,b,c€N Then find value of a+b+c. where¤ means multipication sign

  • maths - ,

    use brackets or the * symbol to show multiplication.
    Secondly lack of brackets to show the order of operation makes an attempt at a solution futile.

  • maths - ,

    pls. do ques . its really a good problem

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