Question

EXPLAIN AND DERIVE PARALLELOGRAM LAW OF VECTOR ADDITION

Answer 1

The Parallelogram law is a type of work do you add, Sub and etc.

Answer 2

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