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Question : 60 of 120
Marks:
+1,
-0
Solution:
Using the triangle law for addition of vectors:
+= ⇒=− =(2++4)−(−) =+2+4 Let's say that
AD is the median from
A.
∴==(+2+4) =++2 And,
=+ ⇒=(−)+(++2) =+0+2 ∴|AD|=√()2+02+22 =√+4=√==2.5.
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