隐藏 标签 left parenthesis, "r" cos left parenthesis, "a" , right parenthesis , "r" sin left parenthesis, "a" , right parenthesis , right parenthesisrcosa,rsina
标签
equals=
left parenthesis, 0 , 3 , right parenthesis0,3
4
Point 2
5
表达式6: "s" equals negative 4s=−4
negative 10−10
1010
6
表达式7: "b" equals negative 90b=−90
negative 180−180
180180
7
隐藏 标签 left parenthesis, "s" cos left parenthesis, "b" , right parenthesis , "s" sin left parenthesis, "b" , right parenthesis , right parenthesisscosb,ssinb
