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Question Number 34683 by math khazana by abdo last updated on 09/May/18
$${find}?{the}\:{nature}\:{of}\:\:\sum_{{n}=\mathrm{0}} ^{\infty} \:{sin}\left\{\pi\left(\mathrm{2}+\sqrt{\mathrm{3}}\:\right)^{{n}} \right\} \\ $$