解析
x=acost+atsint
y=asint-atcost
dx=-asint+asint+atcost
dy=acost-acost+atsint
∴dy/dx=(acost-acost+asint)/(atcost)
=asint/atcost
=tan/t
果断打字,
解析
x=acost+atsint
y=asint-atcost
dx=-asint+asint+atcost
dy=acost-acost+atsint
∴dy/dx=(acost-acost+asint)/(atcost)
=asint/atcost
=tan/t
果断打字,