(a,0) left parenthesis, "a" , 0 , right parenthesisa,0
Label:
equals=
left parenthesis, 2.2 2 , 0 , right parenthesis2.22,0
5
(cos(a),sin(a)) left parenthesis, cos left parenthesis, "a" , right parenthesis , sin left parenthesis, "a" , right parenthesis , right parenthesiscosa,sina