Question

If the angle between two vectors of equal magnitude P is x, the magnitude of the resultant vector ​

Answer 1

Answer: Let both vectors is A

(Resultant)*2= A*2+A*2+2A*2cosx

R= (2A*2 (1 + cos x/2) )*1/2

R = 2Acosx/2 (1 + cosx = 2 cos*2 x/2)