Question

R= under root asquare+bsquate+2ab cos dita

Answer 1

Answer:

This the expression for the resultant vector between any two vectors

Explanation:

Let $\vec{A} \ and \ \vec{B}$ be the two vectors,

     $\vec{R} \ be \ the \ resultant \ of \ the \ two \ vectors$ and

     θ be the angle between A and B

We know that,

according to Parallelogram Law of Vector Addition:

If 2 vectors are to be placed as the adjacent sides of a parallelogram then, the diagonal arising from their point of intersection will give us the resultant of the given two vectors

Mathematically this can be formed as,

$\vec{R} = \sqrt{(\vec{A})^{2} +(\vec{B})^{2}+2\vec{A}\vec{B}cos\theta}$