ADDITION OF VECTORS
PARALLELOGRAM LAW OF VECTOR ADDITION
Acccording to the parallelogram law of vector addition:
"If two vector quantities are represented by two adjacent sides or a parallelogram
then the diagonal of parallelogram will be equal to the resultant of these two vectors."
EXPLANATION
Consider two vectors . Let the vectors have the following orientation
parallelogram of these vectors is :
According to parallelogram law:
MAGNITUDE OF
RESULTANT VECTOR
 
Magintude or resultant vector can be determined by using either sine law or cosine law.
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