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CBSE XII
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Math
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Vector Algebra
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Q)
Write down a unit vector in XY plane, making an angle of 30 degress with the positive direction of
x
axis.
(
A
)
−
√
3
2
ˆ
i
+
1
2
ˆ
j
(
B
)
√
3
2
ˆ
i
−
1
2
ˆ
j
(
C
)
√
3
2
ˆ
i
+
1
2
ˆ
j
(
D
)
−
√
3
2
ˆ
i
−
1
2
ˆ
j
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