Question 958114
You need to use parentheses to separate what is an argument of a function and what is the denominator and numerator.
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Best I can tell, this is your problem.
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{{{ (sin(2(pi/2))+2(pi/2)sin(2(pi/4)))/(cos(2(pi/4))-2(pi/4)cos(2(pi/2) ))=(sin(pi)+(pi)*sin(pi/2))/(cos(pi/2)-(pi/2)cos(pi) )}}}
{{{ (sin(2(pi/2))+2(pi/2)sin(2(pi/4)))/(cos(2(pi/4))-2(pi/4)cos(2(pi/2) ))=(0+(pi))/(0-(pi/2)(-1) )}}}
{{{ (sin(2(pi/2))+2(pi/2)sin(2(pi/4)))/(cos(2(pi/4))-2(pi/4)cos(2(pi/2) ))=(pi)/(pi/2 )}}}
{{{highlight( (sin(2(pi/2))+2(pi/2)sin(2(pi/4)))/(cos(2(pi/4))-2(pi/4)cos(2(pi/2) ))=2)}}}