Question

State parallelogram law and obtain an expression magnitude of resultant vector

Answer 1

Answer:

The Statement of Parallelogram law of vector addition is, If two vectors are considered to be the adjacent sides of a parallelogram, then the resultant of two vectors is given by the vector that is a diagonal passing through the point of contact of two vectors.

Answer 2

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