(a(i))[3]
Find the unit vector pointing in the direction of $\overrightarrow{CD}$.
(a(ii))[6]
With $E$ as the mid-point of $CD$, find angle $EOD$.
Mathematics 9709 · AS & A Level · Coordinate geometry
Find the unit vector pointing in the direction of $\overrightarrow{CD}$.
With $E$ as the mid-point of $CD$, find angle $EOD$.
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Correct expression for vector $\overrightarrow{CD}=-3(2,1,2)+2(4,0,6)$” …