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Mathematics
Problem
If the position vectors of A and B respectively
i
^
+
3
j
^
−
7
k
^
\hat{i} + 3\hat{j} - 7\hat{k}
i
^
+
3
j
^
−
7
k
^
and
5
i
^
−
2
j
^
+
4
k
^
5\hat{i} - 2\hat{j} + 4\hat{k}
5
i
^
−
2
j
^
+
4
k
^
, then find AB .
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