Answers
Full solutions
(a)
At
Solving and simultaneously,
Substituting into
(bi)
Since is perpendicular to the direction vector of is a normal vector of
(bii)
(c)
Since contains lies on
Cartesian equation of
At
Solving and simultaneously,
Substituting into
Since is perpendicular to the direction vector of is a normal vector of
Since contains lies on
Cartesian equation of