Question

Find the magnitude of E (medals!)

Answer 1

Consider the vectors A and B where |A|=100, ThetaA=0deg., and |B|=100, ThetaB=120deg.

Answer 2

Find the magnitude length of E and the angle ThetaE

Answer 3

use RESULTANT FORMULA :-
\[\large \bf \sqrt{A^2+B^2+2ABcos \theta}~where A,B~are~ vector's~magnitudes\]