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1.11.7 Language of vectors in three dimensions (A-level only)

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Question 15

In triangle XYZXYZXYZ, XY⃗=−2i+6j−3k\vec{XY} = -2\mathbf{i} + 6\mathbf{j} - 3\mathbf{k}XY=−2i+6j−3k, XZ⃗=4i+j+7k\vec{XZ} = 4\mathbf{i} + \mathbf{j} + 7\mathbf{k}XZ=4i+j+7k

a.

Find the vector YZ⃗\vec{YZ}YZ

[3]
b.

Find the length of the line XYXYXY

[3]

1.11.7 Language of vectors in three dimensions (A-level only) Questions

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