Question

Find the angle between each of the following pairs of vectors A⃗ =Axi^+Ayj^ and B⃗ =Bxi^+Byj^.
Ax1= -3.20, Ay1= 4.40; Bx1= 2.70, By1= -3.10.

Answer 1

use vectorA dot Vector B=|A|*|B|*cos(theta)

Answer 2

that is dot product of two vectors
@a25526598

Answer 3

Yea but when i use "arccos(-1.02) it just said ERROR