Saturday, 4 July 2015

sequences and series - Find the sum : sin1frac1sqrt2+sin1fracsqrt21sqrt6+sin1fracsqrt3sqrt2sqrt12+cdots

Problem :




Find the sum of :



sin112+sin1216+sin13212+



My approach :



Here the n'th term is given by :



tn=sin1[nn1nn+1]




From now how to proceed further please suggest thanks....

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