Question 33857
{{{2cos(pi)}}}*{{{cosec(2*pi)}}}
{{{cosec(2*pi)}}} = {{{1/Sin(2*pi)}}}
{{{2cos(pi)}}}*{{{1/Sin(2*pi)}}}
but {{{sin(2*pi)}}} = {{{2sin (pi)*cos (pi)}}}

{{{2cos(pi)/(2sin (pi)*cos (pi))}}}
{{{1/sin (pi)}}}
{{{cosec (pi)}}}