Asked by George
If there are 2 vectors that have equal magnitude, and have the angle (theta) between the two of them, what is the value of (theta) if the resulting vector has the same magnitude as well?
Answers
bobpursley
Theta= 120 degrees you can demonstrate this with the law of cosines.
R_scott
the bisector of the angle between the vectors (the resultant)
... must have a component of half the magnitude from each vector
draw a picture
cos(Θ / 2) = 1/2
... must have a component of half the magnitude from each vector
draw a picture
cos(Θ / 2) = 1/2