Question

The resultant of A vector and B vector is R1 vector . On reversing the
vector B. the resultant becomes R2 vector, What is the value of R1^2 vector + R2^2 vector
1. A^2 + B^2
2. A^2 - B^2
3. 2(A^2 + B^2)
4. 2(A^2 - B^2)​

Answer 1

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