CAIE Further Paper 1 2022 June — Question 2

Exam BoardCAIE
ModuleFurther Paper 1 (Further Paper 1)
Year2022
SessionJune
PaperDownload PDF ↗
Mark schemeDownload PDF ↗
TopicVectors: Lines & Planes

2 The points \(A , B , C\) have position vectors $$4 \mathbf { i } - 4 \mathbf { j } + \mathbf { k } , \quad - 4 \mathbf { i } + 3 \mathbf { j } - 4 \mathbf { k } , \quad 4 \mathbf { i } - \mathbf { j } - 2 \mathbf { k } ,$$ respectively, relative to the origin \(O\).
  1. Find the equation of the plane \(A B C\), giving your answer in the form \(a x + b y + c z = d\).
  2. Find the perpendicular distance from \(O\) to the plane \(A B C\).
  3. The point \(D\) has position vector \(2 \mathbf { i } + 3 \mathbf { j } - 3 \mathbf { k }\). Find the coordinates of the point of intersection of the line \(O D\) with the plane \(A B C\).

2 The points $A , B , C$ have position vectors

$$4 \mathbf { i } - 4 \mathbf { j } + \mathbf { k } , \quad - 4 \mathbf { i } + 3 \mathbf { j } - 4 \mathbf { k } , \quad 4 \mathbf { i } - \mathbf { j } - 2 \mathbf { k } ,$$

respectively, relative to the origin $O$.\\
(a) Find the equation of the plane $A B C$, giving your answer in the form $a x + b y + c z = d$.\\

(b) Find the perpendicular distance from $O$ to the plane $A B C$.\\

(c) The point $D$ has position vector $2 \mathbf { i } + 3 \mathbf { j } - 3 \mathbf { k }$.

Find the coordinates of the point of intersection of the line $O D$ with the plane $A B C$.\\

\hfill \mbox{\textit{CAIE Further Paper 1 2022 Q2}}