隐藏 标签 left parenthesis, StartFraction, "x" Subscript, 1 , Baseline cos left parenthesis, 45 "t" Subscript, 1 , Baseline , right parenthesis Over 2 , EndFraction , StartFraction, "y" Subscript, 1 , Baseline sin left parenthesis, 90 "t" Subscript, 1 , Baseline , right parenthesis Over 1 , EndFraction , right parenthesisx1cos45t12,y1sin90t11
标签
equals=
left parenthesis, 0 , 0 , right parenthesis0,0
left parenthesis, 0 , negative 1.2 9 , right parenthesis0,−1.29
left parenthesis, negative 0.6 1 7 4 , 0 , right parenthesis−0.6174,0
