Question

A parallelogram law helps to find the magnitude and direction of the resultant of two forces: a. State the law b. If the magnitude of two vectors and their resultant are the same , what is the angle between the two vectors? c. Determine the value of (A- - B- ) x (A-+B-)

Answer 1

Parallelogram law states that if two vectors are considered to be the adjacent sides of a Parallelogram, then the resultant of two vectors is given by the vector which is a diagonal passing through the point of contact of two vectors.

Angle between the two vectors