Question

Consider vectors u and v, where u = (1, -1) and v = (1, 1). What is the measure of the angle between the vectors?

Answer 1

c

Explanation:

edge

Answer 2

I believe the answer is C. 90 degrees

Explanation:

First you find the lengths of the two vectors, which are both
`√(2)`. Then you find the angle given the cos using: cos(∅)=
`(u*v)/(|u|*|v|)` =
`(0)/(√(2)*√(2) )` = 0. Then using ∅=acos(0)=
`(\pi )/(2)` = 90°