state law of parallelogram of vectors addition and determine magnitude of resultant vectors.
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it states that the if two vectors are represented both in magnitude and direction by the adjacent sides of the parallogram then their resultant is given by the diagonal of the parallogram having both magnitude and direction
R^2=√p^2+q^2+2pqcos theeta
R^2=√p^2+q^2+2pqcos theeta
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