怎么 将{ x=3+tsin40°(t为参数)化为{ x=3-tcos130°{ y=-tcos40° { y=-tsin130°
问题描述:
怎么 将{ x=3+tsin40°(t为参数)化为{ x=3-tcos130°
{ y=-tcos40° { y=-tsin130°
答
怎么 将{ x=3+tsin40°(t为参数)化为{ x=3-tcos130°
{ y=-tcos40° { y=-tsin130°