Two vectors have equal magnitude,and their scalar product is one-third the square of their magnitud
人气：330 ℃ 时间：2020-02-06 04:19:36
解答
The question is not complete,I guess it was asking for the angle between the 2 vectors: scalar product = a^2/3 = a*a*cosθ = a^2cosθ cosθ = 1/3 θ = 70.52°
