The resultant of two vectors P and Q is equal to R. On reversing the
direction of Q ,the resultant becomes S.
Prove that R2 + S2 = 2 ( P2+Q2
)
Answers
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Given-
- P + Q = R
On reversing,
- - R = - P - Q
- S = - P - Q
vectors in question follow the triangle law of vectors.
----(1)
So,
---(2)
On adding (1) and (2) we get
so,
Hence Proved!
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