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4.11.1 Vectors (A-level only)

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Question 10

In triangle PQRPQRPQR, PQ⃗=3i−4j+12k\vec{PQ} = 3\mathbf{i} - 4\mathbf{j} + 12\mathbf{k}PQ​=3i−4j+12k, PR⃗=5i+2j−k\vec{PR} = 5\mathbf{i} + 2\mathbf{j} - \mathbf{k}PR=5i+2j−k

a.

Find the vector QR⃗\vec{QR}QR​

[3]
b.

Find the length of the line PQPQPQ

[3]

4.11.1 Vectors (A-level only) Questions

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