(i)[4]
Calculate the acute angle formed by the two planes.
(ii)[6]
Find a vector equation of the line $l$.
Mathematics 9709 · AS & A Level · Vectors
Vectors — practice question
The equations of two planes are $x + 3y - 2z = 4$ and $2x + y + 3z = 5$. Their intersection is the straight line $l$.
Worked solution & mark scheme
This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “State or indicate a correct normal vector for either plane, for example $\mathbf{i}+3\mathbf{j}-2\mathbf{k}$” …
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