Question

drive an expression for the law of parallelogram of vector addition please give me ans​

Answer 1

Answer:

Let θ be the angle between P and Q and R be the resultant vector. Then, according to parallelogram law of vector addition, diagonal OB represents the resultant of P and Q. Now, expand A to C and draw BC perpendicular to OC. which is the magnitude of resultant.

A and →B make an angle θ between them. To get the resultant by the parallelogram law of vector addition, we draw the complete parallelogram OPQR. Therefore, according to the parallelogram law of vector addition, →C is the resultant vector of →A and →B. The resultant has a magnitude OQ and makes an angle of φ with →B.