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Question : 83 of 160
Marks:
+1,
-0
Solution:
Unit vector
1 parallel to vector
5+12 is given as
1‌=‌=‌‌=‌+‌ 13‌‌13′Similarly, unit vector
2 parallel to vector
3+4 is given as
2‌=‌⇒‌‌2‌=‌+‌1⋅2‌=(‌+‌)(‌+‌) ‌=‌×‌+‌×‌=‌+‌‌=‌
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