31. If unit vector î is rotated through an angle of 30
clockwise, then new vector obtained is
(1)
i 13]
2 2
(2)
-√3i
2 2
+
vai
(3)
3i
+
2.
√3i
(4
)
2.
2 2
Ta
Answers
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Answer: ok
Explanation: ok
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