April 18, 2014

Homework Help: maths

Posted by piyush yadav on Tuesday, December 6, 2011 at 1:49am.

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

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