Question

Explain parallelogram Law of vectors.​

Answer 1

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

Answer 2

Answer:

If two vectors acting simultaneously on a particle are represented in magnitude and direction by the two adjacent sides of a parallelogram drawn from a point, then their resultant is completely represented in magnitude and direction by the diagonal of that parallelogram drawn from that point.

Explanation:

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