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Byju's Answer
Standard XII
Physics
Unit Vectors
If a = î +ĵ...
Question
If
→
a
=
^
i
+
^
j
+
^
k
,
→
b
=
2
^
i
−
^
j
+
3
^
k
and
→
c
=
^
i
−
2
^
j
+
^
k
find a unit vector parallel to the vector.
2
→
a
−
→
b
+
3
→
c
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Solution
2
→
a
−
→
b
+
3
→
c
=
3
→
i
−
3
→
j
+
2
→
k
|
2
→
a
−
→
b
+
3
→
c
|
=
√
9
+
9
+
4
=
22
∴
A unit vector parallel to
2
→
a
−
→
b
+
3
→
c
is
|
2
→
a
−
→
b
+
3
→
c
|
√
22
=
3
→
i
−
3
→
j
+
2
→
k
√
22
=
3
→
i
√
22
−
3
→
i
√
22
+
2
→
k
√
22
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1
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