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Mathematics
Mathematics
Problem
- If
P
(
−
1
,
2
)
P(-1, 2)
P
(
−
1
,
2
)
and
Q
(
3
,
−
7
)
Q(3, -7)
Q
(
3
,
−
7
)
are two points, express the vector
P
Q
\mathbf{PQ}
PQ
in terms of unit vectors
i
^
\hat{i}
i
^
and
j
^
\hat{j}
j
^
. Also, find distance between point
P
P
P
and
Q
Q
Q
. What is the unit vector in the direction of
P
Q
\mathbf{PQ}
PQ
?
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