Mathematics 9709 · AS & A Level · Vectors

Vectors — practice question

The line $l$ is given by $\mathbf{r} = \mathbf{i} + 3\mathbf{j} - 2\mathbf{k} + \lambda(\mathbf{i} - 2\mathbf{j} + 3\mathbf{k})$. The plane $p$ is described by $2x + y - 3z = 5$.
(i)[3]

Find the position vector of the point where $l$ meets $p$.

(ii)[3]

Calculate the acute angle between $l$ and $p$.

(iii)[5]

A second plane $q$ is perpendicular to the plane $p$ and includes the line $l$. Find the equation of $q$, giving your answer in the form $ax + by + cz = d$.

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: Write a general point on $l$ in component form

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