Question

state the parallelogram law of vector addition hence find out an expression for the resultant magnitude.​

Answer 1

Answer:

Hence, we have u+v=w, which is theparallelogram law of vector addition. tanϕ=asinθv+acosθ⇒ϕ=tan−1(usinθv+ucosθ), which is the required direction of theresultant vector. Note: [1] Angle between two vectors is the angle between two directions of the vectors and not the angle between the line segments.