Explain parallelogram Law of vectors.
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What parallelogram Law of vector?
If any two vectors acting at a point are represented in magnitude and direction by the two adjacent sides of a parallelogram that is drawn from a point, then the resultant of the two vectors are represented by magnitude and the direction of the diagonal of the parallelogram dream from the same point.
So resultant of vectors A and B
= √A²+B²+2ABcos a
And if the resultant R of the vector subtends an angle C with vector A ,then
Tan C = B sin a/A+B cos a
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