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Byju's Answer
Standard XII
Physics
Unit Vectors
If a unit vec...
Question
If a unit vector is represented by
0.5
^
i
−
0.8
^
j
+
c
^
k
then the value of c is
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Solution
Magnitude of unit vector is unity i.e.
|
^
A
|
=
1
Or
√
0.5
2
+
0.8
2
+
c
2
=
1
Or
0.25
+
0.64
+
c
2
=
1
⟹
c
=
√
0.11
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