Expression 3: cosine left parenthesis, "x" left parenthesis, pi , right parenthesis , right parenthesiscosxπ
3
Expression 4: sine left parenthesis, "x" left parenthesis, pi , right parenthesis , right parenthesissinxπ
4
Hidden Label: left parenthesis, cos left parenthesis, "a" left parenthesis, pi , right parenthesis , right parenthesis , sin left parenthesis, "a" left parenthesis, pi , right parenthesis , right parenthesis , right parenthesis equals left parenthesis, negative 1 , 0 , right parenthesis Has graph. To audio trace, press ALT+T.cosaπ,sinaπ
Label
equals=
left parenthesis, negative 1 , 0 , right parenthesis−1,0