表达式19: polygon left parenthesis, "C" , "P" , right parenthesispolygonC,P
19
表达式20: polygon left parenthesis, "B" , "P" , right parenthesispolygonB,P
20
表达式21: polygon left parenthesis, "A" , "B" , "C" , right parenthesispolygonA,B,C
21
隐藏 标签 left parenthesis, "A" Subscript, 1 , Baseline , "A" Subscript, 2 , Baseline , right parenthesis , left parenthesis, "P" Subscript, 1 , Baseline , "P" Subscript, 2 , Baseline , right parenthesisA1,A2,P1,P2
标签
equals=
left parenthesis, 3 , 1.7 3 2 , right parenthesis3,1.732
left parenthesis, 2 , 1.8 2 6 , right parenthesis2,1.826
22
表达式23: left parenthesis, "M" Subscript, 1 , Baseline plus "R" cos "t" , "M" Subscript, 2 , Baseline plus "R" sin "t" , right parenthesisM1+Rcost,M2+Rsint
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
